Elements Of Electrical And Electronics Engineering Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 2

S.B. Roll No. _____________

ELEMENTS OF ELECTRICAL AND ELECTRONICS ENGINEERING

3rd Exam/Mech/5341/0353/May’09

Duration 3 Hrs.

1.     Fill in the blanks

a.     In order to make up the level of acid in a lead acid cell_______is added.

b.     In a R-L series circuit, current ______ behind the applied voltage.

c.      If the frequency of an alternating current is 200 KHZ, its time period will be ____

d.     The direction of rotation of 3 phase induction motor can be changed by ______

e.      Highly skilled labour is required in _______ wiring system.

f.       A ____________ is provided in an electrical circuit for safe guarding the installation against heavy currents.

g.     Transformer core is made of laminations to reduce ______.

h.     A PN junction conducts in _____ direction only.

i.       An SCR or Thermistor is a _________ junction device.

j.       An electric lamp of 60 watts will consume 1.8 units of energy in _____ hours.

Section –B

 Note : Attempt any five questions

2.       

a.     Explain the working principle of transformer with neat diagram and also define transformation ratio.

b.     Explain the terms cycle, frequency, amplitude and instantaneous value with diagram

c.      Define the following terms specify their units

                                                             i.      Voltage

                                                           ii.      Current

                                                        iii.      Energy

                                                        iv.      Power

d.     Name the various methods of earthing? Explain any one method in detail.

e.      Explain light fan circuit, single phase power circuit and sub circuits used n domestic electrical instalaion.

f.       What is a zener diode? Mention its application.

g.     Define power factor and explain how power factor can be improved by using capacitors?

h.     What is the difference between high voltage and low voltage distribution system?

Section -C

Note : Attempt any three questions

3.     Why is a starter required for starting a 3 phase induction motor? Draw a neat sketch of a star delta starter and explain its working

4.       

a.     Explain any one method of charging of battery with neat circuit diagram.

b.     Explain the advantages of electrical energy over other type of energy

5.      

a.     Draw and explain volt ampere characteristic of a thyristor?

b.     Describe electric shock and their preventive measures?

6.       

a.     What are the various accessories and parts of domestic installation?

b.     What is the necessity of transformer? Explain oil immersed natural cooling?

7.     Wrote short note on any two:

a.     Steeper motor

b.     Differentiate between single phases and three phases supply

c.      Faraday’s laws of electromagnetic indication.

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Elements Of Electrical And Electronics Engineering Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll No. _____________

ELEMENTS OF ELECTRICAL AND ELECTRONICS ENGINEERING

3rd Exam/Mech/Auto/5341/0353/0532/0932/Dec’11

Duration 3 Hrs.

Q1. Fill in the blanks:

a. KWH is the unit of __________.

b. Electrical appliances such as washing machines, light point, fan and TV etc are connected in__________ with the supply.

c. Voltmeter is always connected in __________with the load.

d. The direction of the induced emf can be determined by __________.

e. A current is said to be alternating when it changes __________.

f. Transformer core is made of __________.

g. Tappings are provided on the transformer for varying the __________ voltage.

h. The secondary distribution system is carried out by __________ system.

i. The number of terminals in the terminal box of an inductor motor (3 phase) is __________.

j. Fuse is meant for the __________ of electrical circuit.

k. In ACSR conductor, the function of steel

l. Proper insulation of cables __________the leakage current.

m. Miniature circuit breaker is an __________ device.

n. Capacity of battery is measured in __________.

o. A zener diode is used as __________.

Section B

Note: Attempt any six questions: 6x5

Q2 i. Mention the advantages of electrical energy over other type of energy.

ii. In an a.c. system, define the following

a. Amplitude b. Cycle

c. Time period d. Frequency

iii. An a.c. circuit consists of pure resistance of 20 ohms and is connected across an a.c. supply of 200 volts, 50 Hz, calculate

a. Current b. Power consumed

c. Max. value of volt Vm

iv. What  is the necessity of cooling the transformer? Explain any one method of cooling.

v. Explain the working principle of an auto transformer?

vi. In case of 400 / 230 v, 3 phase 4 wire system, what is the voltage between any two phase wire and between any one phase and neutral with the help of suitable diagram.

vii. Explain, the indication of a fully charged cell.

viii. Explain the advantage and disadvantage of conduit wiring.

Section C

Note: Attempt any three questions:

Q3 a. What is power factor? Discuss how the power factor can be improved.

b. Describe disc type PM type stepper motor?

Q4 a. What is the purpose of fuse in an electrical circuit? Discuss the

properties of fuse wire.

b. What is electrical shock? Disuses how it can be treated.

Q5 a. How the direction of rotation of a 3 phase induction motor can be

changed?

b. Describe C.E configuration and its characteristics.

Q6 a. Discuss the important application of a Thermistor?

b. Why a PN junction is known as crystal diode? Give the important application of a diode?

Q7 a. What is sub circuits? Differentiate between light – fan and power sub

circuit.

b. Discuss the maintenance free batteries.

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Mechanical Engineering Drawing-I Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll No. _____________

MECHANICAL ENGINEERING DRAWING-I

3RD Exam/Mech/Auto/5347/0053/0534/Dec-2011

Duration: 3 Hrs

Section-A

Q1. Solve any two questions:

(i) (a) Give a sketch of a shaft and hole showing basic size, deviations and tolerances.

(b) Sketch clearance fit, interference fit and transition fit.

(c) Sketch unilateral tolerance and bilateral tolerance.

(d) Sketch a hole basis system and a shaft basis system.

(ii) Two cylinders each of 60mm diameter and 120mm long axis penetrate each other with their axes bisecting each other at right angles. Draw their projections showing curves of interpretation.

(iii) Sketch front view of a stepped pulley.

Section-B

Q2. Solve any one question:

(i) Fig.1 gives details of a universal coupling. Assemble the parts and draw the following views of the assembly.

(a) Front vies upper half in section.

(b) Top view

(ii) Fig.2 gives pictorial view of a bushed bearing. Draw its following views:-

(a)  Front vies, right half in section.

(b) Top view, left half in section .

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Personal Computer Organization Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll No. _____________

PERSONAL COMPUTER ORGANIZATION

6th Exam/COMP/6227/Dec-2011

Duration: 3 Hrs.

Section-A

Q1. Do as directed:

(i) ISA stands for ___________.

(ii) RAM is measured in units called ______________.

(iii) Keyboard connectors are type basically. (T/F)

(iv) DIMM stand for ___________.

(v) The BIOS is a ROM chip. (T/F)

(vi) The form factor of the motherboard describes its general shape. (T/F)

(vii) The impact printers do not create noise. (T/F)

(viii) The dot matrix printers have one of the lowest printing costs per page. (T/F)

(ix) Inkjet printers can print finer. (T/F)

(x) HDD stands for _____________.

(xi) SMPS stands for ____________.

(xii) A __________ is device that modulator an analog carrier signal to encode digital information.

(xiii) CFT has higher power consumption. (T/F)

(xiv) The display resolution is the number of pixels in each dimension that can be displayed. (T/F)

(xv) CRT stands for _______________.

Section-B

Q2. Attempt any six questions:

(i) What are the advantages and disadvantages of inkjet printers?

(ii) What are the advantages and disadvantages of laser printers?

(iii) Write three parameters for measuring performance of a monitor.

(iv) Write components of motherboard.

(v) What do you mean by bus? What are features of USB?

(vi) What is role of chipsets on motherboard?

(vii) Explain difference between a parallel port and a serial port.

(viii) Write basic component of hard disk drive.

(ix) Explain expansion slot on motherboard.

(x) Differentiate between BIOS on CMOS

Section-C

Q3. Attempt any two questions:

(i) Explain working of laser printer.

(ii) Explain principle of operation of computer monitor.

(iii) Explain block diagram of keyboard controller.

(iv) Explain common faults in keyboard and mouse.

(v) What are various components of modern video card?

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Refrigeration Engineering Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll No. _____________

REFRIGERATION ENGINEERING

5th Exam/RAC/5407/0254/Dec’11

Duration 3 Hrs.

Section A

Q1. Do the following:

a. Most of the commercial refrigeration is produced by the evaporation of a liquid __________.

b. __________ is the ratio between the heat extracted and the work done.

c. The ratio of high temperature to low temperature for reversed carnot cycle refrigerator is 1:25. The COP will be __________.

d. In a domestic vapour compression refrigerator, the refrigerant commonly used is __________.

e. A domestic window type air conditioner capacity may be approx. __________ ton.

f. The refrigerant, commonly used in vapour absorption system, is __________ (water/ Freon)

g. For fixed pressure ratio the isentropic compression work is the lowest for __________ (R-11/R-12)

h. __________ refrigerants are those working mediums or heat carries which directly take part in the refrigeration system (primary / secondary).

i. Air refrigeration cycle is used in __________ (air conditioning refrigerators)

j. The cooling system used for supersonic aircrafts and rockets is __________ (regenerative / boot– strap)

Section B

Note: Attempt any five questions

Q2 i. Define actual COP and theoretical COP?

ii. State merits and demerits of an air refrigeration system.

iii. Explain briefly the term ‘Total Volumetric efficiency’?

iv. What is simple vapour absorption system? State how its efficiency can be improved?

v. Define ‘Refrigerant”. How are refrigerants classified?

vi. State the limitations of reversed Carnot cycle?

vii. Enumerate important refrigeration applications.

Section C

Note: Attempt any three questions

Q3. Derive an expression for COP for an air refrigeration system working on reversed Brayton Cycle.

Q4. Draw a neat diagram of dithiumbromide water absoption refrigeration system and explain its working? List out the major fields of application?

Q5. Discuss the physical and thermodynamic properties of the following refrigerants and how the leaks are detected in each case

a. R-11

b. R-12

c. R-22

Q6. A reversed Carnot cycle is used for heating and cooling purpose. If the work supplied is 9.5 kw and COP is 3.6 for cooling find.

a. T2/T1

b. The refrigerating effect in tonner of refrigeration

c. COP for heating

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Industrial Electronics And Instrumentation Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll No. _____________

INDUSTRIAL ELECTRONICS AND INSTRUMENTATION

5th Exam/ECE/6106/Dec’11

Duration: 3 Hrs

Note: Attempt All Questions.

Section- A

Q1 Do as Directed:

i) Capacitive transducer can be used to measure humidity. T/F

ii) Strip Chart recorder is a graphic recorder. T/F

iii) L VDT converts displacement into pressure. T/F

iv) Digital displays require large power. T/F

v) Piezoelectric is _________ type of transducer. (Active/ Passive)

vi) Thermistor is a secondary transducer. T/F

vii) X- Y recorder has _________ no. of inputs.

viii) Measurement instrument must have _________ loading effect.

ix) CMRR stands for _________

x) Dielectric gauge is variable resistance type transducer. T/F

Section - B

Q2. Attempt any five questions:

i) What is the significance of CMRR? Explain.

ii) Describe LVDT & it’s working.

iii) Explain different classifications of transducer.

iv) What are different classificatiol1s of transducer?

v) Give features & applications of thermocouple transducer.

vi) Explain in brief different elements of measurement system.

vii) Write short note on proximity probes & digital transducer.

Section C

Q3 Attempt any three questions:

i) Explain construction, working & features of X-V recorders.

ii) Explain characteristics of instrumentation amplifier in terms of l/P, O/P impedance, gain & frequency.

iii) Explain the following transducers

a) Pressure Gauge

b) LVDT

iv) Write short note on any two of following

a) Signal Conditioner.

b) Power Supply of measurement system.

     c) Torque measurement.www.brpaper.com

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Chassis Body And Transmission Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll No. _____________

CHASSIS, BODY & TRANSMISSION

4th Exam/Auto/9308/Dec’11

Time 3 hrs

Note : Q No 1 is COMPULSORY

From remaining attempt four questions, draw neat sketches wherever necessary

Q1. COMPULSORY

Write the correct answer from the choices given

(a.) The number of points at which the engine-clutch-gear box unit is supported on the chassis frame isone, two, three, four

(b) The Chassis frame may get distorted to a parallelogram shape due to-weight of the vehicle, weight of the passengers, cornering force, wheel impact with obstacles on the road.

(c) A clutch is usually designed to transmit maximum torque, which is - equal to the maximum engine torque, 80% of the maximum engine torque, 150% of the maximum engine torque, none of these

(d) The inertia of the rotating parts of the clutch should be- minimum, maximum, zero, none of these.

(e) In a a simple planetary gear set, the out put member to increase torque is always the-sun gear, ring gear, planet carrier, none of these.

(f) In a simple epicyclic gear set, the output member to increase torque in reverse is always the- ring gear, planet carrier, sun gear, none of these.

(g) Critical whirling speed of a shaft is increased by- increasing its length, decreasing its length, decreasing its diameter, none of these.

(h) The function of a universal joint is to allow the propeller shaft to - change length, bend sideways, transfer torque at an angle, change the inclination.

(i) The type of wheel which cannot be used with a tube less tyre is- disc wheel, wire wheel , light alloy wheel, composite wheel.

(j) The types of wheels preffered in sports cars are- disc wheels, wire wheels, magnesium alloy wheels, aluminium alloy wheels.

Q2.    (a) Name the components of an automobile chassis suitably mounted

(b) Classify the chassis of an automobile with brief description of each

Q 3. What is the function of a clutch? Discuss the various factors affecting the TORQUE Transmission in a Clutch

 Q4. With the help of neat sketch explain the process of Torque Transmission in a Fluid Flywheel. Also discuss advantages and disadvantages of Fluid Flywheel

Q5. Discuss the functions and necessity of Transmission System

Q6. Explain with the help of neat diagram the Construction of a Propeller Shaft.

Q7. Discuss the importance of Wheels & Tyres in an Automobile and mention the requirements of an automobile wheel.

Q8. Write short notes on any TWO:-

(a) Tubeless Tyres

(b) Causes of excessive tyre wear

(c) Semi floating & fully floating axles

(d) Centrifugal Clutches

(e) Body Upholstery.

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3rd Semester AE(D), Basics of Thermal And Hydraulics Engineering Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll No. ___________

BASICS OF THERMAL AND HYDRAULICS ENGINEERING

3rd Exam/Auto Engg/0930/Dec 11

Duration: 3Hrs

 Q1 a) Fill in the blanks.

i. Boyle’s law is applicable when_________ is kept constant.

ii. The properties of a thermodynamic system, which are dependent on its_________, are known as extensive properties.

iii. Heat can flow from a body at___________ temperature to a body at_________ temperature.

iv. Three modes of heat transfer are__________.

v. Otto cycle consists of two adiabatic and two ________ processes.

b) State true or false.

vi. The vapours do not obey gas laws. (T/F)

vii. Zeroth law determines temperature. (T/F)

viii. In the diesel cycle the heat is supplied to the working substance at constant pressure. (T/F)

ix. Heat transfer is more in the case of natural convection than forced convection. (T/F)

x. In mines, the compressed air is used to drive the pneumatic tools. (T/F)

Note: Attempt any five questions.

Q2. Define the following:

          a). Thermodynamics b). System. c). Boundary d) Surroundings.

Q3. Give the various industrial uses of compressed air.

Q4. Explain Zeroth law of thermodynamics.

Q5. Explain the phenomenon of heat transfer by conduction.

Q6. What are the basic components of a hydraulic system and explain its function.

Q7. 2.5 m3 of a gas at 8 bar abs. pressure expand at constant temperature to a volume of 10 m3 . Find the final pressure of the gas.

Note: Attempt any three.

Q8. Explain with neat sketch the construction and working of centrifugal compressor.

Q9. Derive an expression for the efficiency of an engine working on Otto cycle.

Q10. Write short note on following:

a). Isothermal process

b). Throttling Process.

c). One tonne of refrigeration.

Q11. Explain with the help of neat sketch the working of hydraulic jack and also write the law on which it works.

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Water Supply And Waste Water Engineering Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll. No. __________

WATER SUPPLY AND WASTE WATER ENGINEERING

4th Exam/Civil/4451/5108/Dec’11

Duration 3 Hrs.

Section A

Q1. Fill in the blanks

a. During fire the demand rate of water in __________.

b. The instrument used for testing adour is called __________.

c. Turbidity is due to __________ impurities.

d. A.C pipes are made of __________ and cement.

e. Dual system means __________.

f. The distribution system should be fairly __________.

g. When pipe is laid above the ground it facilitates __________ and __________.

h. Ferrule is made of __________.

i. The lower most surface of sewer is called __________.

j. Storm water means __________.

k. Masonary sewers are used when the size is __________.

l. The house drain should be provided with __________ for disconnecting it from sewer.

m. The pipe installed to pressure the water seal of trap in called __________.

n. Arobic bacterias exist in the pressence of __________.

o. Screens are usually laid at an angle of __________.

Section B

Note: Attempt any ten questions

Q2 i. Name the factors affecting per capita demand.

ii. What do you means by population forcasting?

iii. Name the varius chemical tests conducted on water.

iv. Define coagulants are their purpose

v. What is the necessity of disinfection of water?

vi. What is the man hole and what are its function?

vii. Explain the function of floculator.

viii. Explain the uses of PVC pipe?

ix. Explain joints for cast iron pipe.

x. What are the advantages of conservancy system?

xi. Differentiate between grease and oil traps.

xii. What are the advantages of band treatment?

xiii. Explain the process of self purification of streams

xiv. What are the requirements of good building drainage?

xv. Name different types of pipe for water supply.

Section C

Note: Attempt any three questions

Q3. Write notes on the following and draw their neat sketches.

i. Flanged joint

ii. Screw

iii. Socket joint

Q4 a. What is water supply system?

b. What is necessity of water supply system?

 Q5. Explain sedimentation and its various types in detail. Explain process of plain sedimentation.

Q6 a. What are aims of building drainage?

b. How will you check the gradient of sewer?

Q7. What are the advantages and disadvantages of conservancy method and water carriage system.

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Electronics Instruments And Measurements Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll. No. __________

ELECTRONICS INSTRUMENTS AND MEASUREMENTS

4th Exam/ECE/2461/6168/Dec’11

Duration: 3 Hrs

SECTION A

Q1. Answer the following

a. Define Reproducibility.

b. Define Precision.

c. Define sensitivity.

d. Define percentage error.

e. THD stands for _________

f. State two advantages of PMMC movement.

g. _________ is the smallest change to which the instrument will respond.

h. The sensitivity of an instrument should be as _________ as possible.

i. PMMC stands for _________

j. The scale of moving iron type instrument is _________

SECTION B

Note: Attempt any five questions.

Q.2    a. Distinguish between accuracy and precision.

b. What is loading effect of instrument?

c. How can we measure voltage and frequency using CRO?

d. Draw the block diagram of Wave analyzer and explain its principle.

e. Explain the working and principle of Wheatstone bridge with a suitable diagram.

f. What is difference between dual beam and dual slope CRO?

g. What do you mean by gross errors?

SECTION C

Note: Attempt any THREE questions

Q3. Draw the block diagram of CRO and explain its working.

 Q4. Draw the diagram of PMMC instrument. Explain its principle of operation.

Q5. Draw block diagram of function generator and explain its working.

Q6. Write short notes on the following

a. Digital Multimeter

b. Logic probe 

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Computer Networks Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll. No. __________

COMPUTER NETWORKS

4th Exam/Comp/2462/Dec’11

Time Allowed: 3 Hours

Note: Attempt all questions

Section –A

Q1: Do as Directed Marks :

1. Computer Network facilitate in communication efficiently and easily. (T/F)

2. A __________is a computer network that covers a large geographic area such as a city, country.

3. WLAN stands for __________

4. The network design is the integral part of the physical layer. (T/F)

5. UTP stands for __________

6. TCP/IP is based on a seven-layer reference model. (T/F)

7. The basic functions of ________layer (OSI Model) are routing and congestion control.

8. NIC stands for __________

9. Hub resides in Data Link Layer. (T/F)

10. Ping 127.0.0.1 is known as __________ test.

11. IP address 192.168.10.1 belongs to class __________

12. MAC address is 32 bit long. (T/F)

13. Wi-Fi stands for __________

14. Infrastructure Mode in WLAN need Access Point for communication. (T/F)

15. ATM stands for __________

Section-B

Note: Attempt any six questions Marks :

Q2     a. Write difference between Hub and Switch?

 b. What are Functions of Network Interface Card?

          c. Explain difference between Peer-to-Peer and Client-Server Network?

 d. What do you understand by Physical and Logical Addressing?

 e. What are different types of classes in IPv4 Addressing?

 f. Write various layers in TCP/IP model and Explain function of Application Layer?

 g. What are functions of Router?

 h. What do you understand by Firewall?

 i. What are the types of LAN technologies?

 j. What are advantages of switch over hub?

Section –C

Note: Attempt any two questions Marks :

Q3     a. Explain OSI Reference Model?

 b. What are source of errors in data communication. What are general principle of error detection and correction?

 c. What are advantages of Wireless LAN? What are various Wireless Standards?

 d. What are different types of Network Topologies used in Local Area Network?

 e. What are various types of WAN Connections?

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Thermodynamics-I Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll. No. __________

THERMODYNAMICS-I

4th Exam/Mech/5367/2253/Dec-2011

Duration: 3 Hrs

Section-A

Q1. Fill in the blanks

(i) ___________ property of the system depends upon the mass of the system.

(ii) The __________ of a substance is the space occupied by it.

(iii) The gas law apply to _________ gases only.

(iv) The work done in constant volume process is ___________

(v) The first law of thermo dynamics forms the basis for the measurement of __________

(vi) Second law of thermodynamics helps to form the basis of _____________

(vii) An ideal or a perfect gas does not obey the gas laws.(T/F)

(viii) During addition of patent heat temperature of the substance remain ___________

(ix) Dryness fraction of super heated stem can never be less than one (T/F)

(x) __________ water is used for the boiler.

(xi) Otto cycle is used for diesel engine (T/F)

(xii) Air cooler is provided in the ___________ stage compression.

(xiii) Radiation is a mode of heat transfer (T/F)

(xiv) Walls of several heterogeneous layers is called ___________

(xv) Kalvin-planks law deal with conservator of heat (T/F)

Section-B

Q2. Attempt any six question

(1) What do you mean by thermodynamics?

(2) 2m²

of a gas at 300C receives heat at constant pressure so that the final temperature is 2100C. Find out final volume & increase in volume during the process.

(3) Explain Isentropic Process.

(4) A boiler produces 800kg of steam per hour from feed water at 50°C. Assuming the boiler to be steady flow system neglecting potential energy changes. Find the rate at which heat is transferred. Assuming enthalpy of steam is 2800 kj/kg.

(5) Define real gases.

(6) What are the advantages of super heating steam?

(7) Write the comparison of fine tube and water tube boiler.

(8) What do you mean by multistage compressor.

Section-C

Q3. Attempt any two of the following

(i) Explain the following

(a) Fourier law

(b) Thermal radiation

(c) Steady state condition

(ii) In a flow process the internal energy of a gas decreases by 200kj/kg of gas and flow work increases by 4800kj per kg of the gas. Find the change in specific enthalpy and also in total enthalpy of the gas.

 (iii) Explain the following

(a) Latent heat of vaporization

(b) Dryness fraction(x)

(c) Total heat of wet steam

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Electrical Measuring Instruments And Instrumentation Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll. No. __________

ELECTRICAL MEASURING INSTRUMENTS AND INSTRUMENTATION

4th Exam/Elect/2052/5266/Dec’11

Duration 3 Hrs.

Section A

Q1. Fill in the blanks

a. In an indicating instruments controlling torque is always appears the __________ torque.

b. Energy meter is __________ instrument.

c. The internal resistance of voltmeter is __________.

d. The steady speed of the disc in an energy meter is achieved when __________.

e. The reading of meggar is __________ if the measuring terminals are open circuited

f. For construction of core of CT, usually the material used is __________.

g. In an electrical resonance type frequency meter, the capacitor connected across __________.

h. The time base circuit is also called the __________ generator.

i. Digital multicenter is basically a __________.

j. Max well wean bridge is used to measure __________.

k. When two wattmeter are connected in delta system, the phase current is equal to __________.

l. When the average velocity of flowing liquid is slow, the flow is said to be __________.

m. Self generating type transducers are called __________.

n. The flicking of the lamp placed on the central limb of the magnetic core of a synchroscope depend upon __________.

o. On the moving system of an earth tester __________ coils are mounted on the same spindle.

Section B

Note: Attempt any five questions

Q2 i. Name different types of torques provided in indicating type instruments and explain in brief why these torques are required?

ii. Differentiate between indicating, recording and integrating instruments.

iii. What is the difference between ammeter and voltmeter?

iv. Describe with neat sketch, the principle and construction of dynamometer type watt meter?

v. What are the sources of error in an induction type watt hour meter?

vi. Describe the difference between CT and PT.

vii. Describe the construction and working of a Wright demand indicator?

viii. What do you mean by transducer? Explain.

ix. Describe the principle and construction of a meggar.

Section C

Note: Attempt any five questions

Q3. Describe the principle and working of a single phase power factor meter.

Q4. What are the various electrical quantities which are generally measured by a multimeter? How is resistance measured by a multimeter.

Q5. Explain the working of oscilloscope with a block diagram.

Q6. Describe the two wattmeter method for the measurement of power in a 3 phase balanced load system. How does the wattmeter reading vary with the power factor?

Q7. Describe the working of a float of measuring of displacement of surface of liquid.

Q8. Write short notes on

a. Phase sequence indicator

b. Thermocouple

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Automobile Engine-1 Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll. No. __________

AUTOMOBILE ENGINE -1

3rd Exam/Auto/9307/Dec’11

Time -3 hrs

Note : Question No 1 is compulsory.

Draw neat sketches wherever necessary

Note: Attempt any five questions.

Q.1 Write the correct answer from the given choices:-

(a) The working cycle of a four stroke engine is completed in the following number of revolutions of

      crank shaft: 1/2, 1, 2, 4, 8.

(b) In a diesel engine, fuel is ignited by:-

spark, injected fuel, heat resulting from compressing the air that is supplied for combustion, ignitor, combustion chamber.

(c) The calorific value of gaseous fuels is expressed in terms of:

KCal, KCal/Kg , KCal/m sq, KCal/m cube, all of the above.

(d) An engine indicator is used to determine the following:-

speed, temperature, volume of cylinder, m.e.p. and IHP, BHP

(e) The specific fuel consumption per BHP hour for a petrol engine is approximately—

0.15 kg, 0.2 kg, 0.25 kg, 0.3kg, 0.35kg.

Q2.    (a) Discuss the various types of cylinder arrangements available.

(b) State and explain the importance of engine fan belt.

(c) Discuss four strokes of a C.I. engine.

Q3    (a) What do you understand by the terms Top and Bottom dead centres? 

         (b) Discuss Compression Ratio of a diesel engine.

Q4     

Discuss AC Mechanical and Electrical Fuel Feed pump of an automobile engine.                 

Q5     (a) Discuss the requirements of air fuel ratios under the various load conditions of a Petrol     

               Engine.

          (b) What is the role of a Governor? 5mks

Q6 Draw a schematic sketch of COOLING SYSTEM of a Diesel engine and name its components.

Q7

(a) Name the various lubrication Systems of a Petrol Vehicle, discuss any one

(b) What are the essential requirements of the engine lubricating oils? 7mks

Q8 Write short notes on any three:-

(a) Inlet and Exhaust Manifold

(b) Exhaust Silencers

(c) Valve Timings

(d) Crank Case Ventilation

(e) Thermostat

(f) Fan belt

(g) CB Point Gap

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Water Supply And Waste water Engineering Question Paper of 3rd Semester AE(D) Download Previous Years Question Paper 1

S.B. Roll. No. __________

WATER SUPPLY AND WASTE WATER ENGINEERING

4th Exam/Civil/4451/5108/Dec’11

Duration 3 Hrs.

Section A

Q1. Fill in the blanks

a. During fire the demand rate of water in __________.

b. The instrument used for testing adour is called __________.

c. Turbidity is due to __________ impurities.

d. A.C pipes are made of __________ and cement.

e. Dual system means __________.

f. The distribution system should be fairly __________.

g. When pipe is laid above the ground it facilitates __________ and __________.

h. Ferrule is made of __________.

i. The lower most surface of sewer is called __________.

j. Storm water means __________.

k. Masonary sewers are used when the size is __________.

l. The house drain should be provided with __________ for disconnecting it from sewer.

m. The pipe installed to pressure the water seal of trap in called __________.

n. Arobic bacterias exist in the pressence of __________.

o. Screens are usually laid at an angle of __________.

Section B

Note: Attempt any ten questions

Q2 i. Name the factors affecting per capita demand.

ii. What do you means by population forcasting?

iii. Name the varius chemical tests conducted on water.

iv. Define coagulants are their purpose

v. What is the necessity of disinfection of water?

vi. What is the man hole and what are its function?

vii. Explain the function of floculator.

viii. Explain the uses of PVC pipe?

ix. Explain joints for cast iron pipe.

x. What are the advantages of conservancy system?

xi. Differentiate between grease and oil traps.

xii. What are the advantages of band treatment?

xiii. Explain the process of self purification of streams

xiv. What are the requirements of good building drainage?

xv. Name different types of pipe for water supply.

Section C

Note: Attempt any three questions

Q3. Write notes on the following and draw their neat sketches.

i. Flanged joint

ii. Screw

iii. Socket joint

Q4 a. What is water supply system?

b. What is necessity of water supply system?

 Q5. Explain sedimentation and its various types in detail. Explain process of plain sedimentation.

Q6 a. What are aims of building drainage?

b. How will you check the gradient of sewer?

Q7. What are the advantages and disadvantages of conservancy method and water carriage system.

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