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## B.Sc. IT (Integrated) IBSIT BASIC SCIENCES AND HUMANITIES – II, Punjab Technical University , question paper

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Roll No. ......................
Total No. of Questions : 13]                                                                                      Total No. of Pages : 02
Paper ID [A2007]
(Please fill this Paper ID in OMR Sheet)
B.Sc. IT (Integrated) IBSIT (202) (Old) (Sem. - 2nd)
BASIC SCIENCES AND HUMANITIES – II

Time : 03 Hours                                                                                                      Maximum Marks : 75

Instruction to Candidates:
1) Section - A is Compulsory.
2) Attempt any Nine questions from Section - B.

Section - A<
(15 × 2 = 30)
Q1)
a) What are the number of electrons crossing per second if the current is 2A?
b) Name charge carriers for
(i) Conductor (ii) Semiconductor (iii) Gases
c) Find current through each resistance
d) What is see-back effect?
e) Convert 40 kwh into Joules.
f) What is electric energy?
g) What is resistivity and conductance?
h) What are the applications of thermoelectricity?
i) What are the applications of heating effect of current.
j) Why resistance of conductor increases with temperature?
k) What are ohmic and non-ohmic conductors?
l) Define neutral temperature.
m) State Kirchhoff’s I and II Laws.
n) What is electroplating?
o) Write the colour coding for 150 kÙ _ 10% resistance.
Section - B
(9 × 5 = 45)
Q2) Explain colour coding of resistors.
Q3) Explain the working of dry cell.
Q4) There are two bulbs marked 60 W, 220 V and 100 W, 220 V. When both are connected in series to 220 V. What will be the total power consumption?
Q5) What is the amount of heat generated, when current of 4A flows through a wire of 16.5 Ù for one month?
Q6) What is Wheatstone bridge? Obtain its condition using Kirchhoff’s laws.
Q7) Using Kirchhoff’s law, calculate current through the battery.
Q8) Obtain the expression for net resistance when No.of resistances are connected in
(a) Series. (b) Parallel.
Q9) What is Joule’s law of heating? What is the function of fuse wire?
Q10) What is electric current? Define steady, varying, and alternating current.
Q11) What are Faraday’s laws? Explain with illustrations.
Q12) What do you understand by the resistance of conductor? What are the factors on which it depends?
Q13) The resistance at temp. of 50ºC is 10Ù and 12Ù at 80ºC. What will be its resistance at 0ºC?