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1.Electric power is
A. rate of electric work done per unit time
B. voltage per unit time
C. electric charge per unit time
D. current per unit time


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2.What is the duration of one cycle known as
A. period
B. cycle
C. instantaneous value
D. sin wave


3.The speed of sound in air is approximately:
A. 1500 m/s
B. 5000 m/s
C. 330 m/s
D. 50 m/s


4.Formula for Power is
B. P=V/I
C. p= V+I
D. p=VQ


5.In Thermodynamics zeroth law is related with
A. Work
B. Energy
C. Thermal equilibrium
D. Entropy


6.Acceleration of rolling object is zero at _________ point of hill
A. highest
B. lowest
C. middle
D. none of these


7.The voltage turn ratio of step down transformer is
A. 1:2
B. 1:3
C. 2:1
D. 2:5


8.Farad is defined as:….
A. newton / volt
B. coulomb / volt
C. coulomb / joule
D. coulomb / newton


9.A force of F = 20 + 10y N is acting in y direction, work done by this force to move the particle from y= 0 to y = 1m
A. 20 J
B. 15 J
C. 5 j
D. 25 J


10.What is the unit of frequency?
A. 1/Hertz
B. 1/ second^2
C. Second
D. Hertz


11.The secondary turns of which of the following transformers is always kept closed for ______ transformer
A. power
B. voltage
C. current
D. step down


12.Ten complete waves passes through a point in 2 seconds. If the wavelength is 20 cm, what is the speed of the wave?
A. 1 m/s
B. 10 cm/s
C. 2 m/s
D. 40 cm/s

Ans. A

13.Faraday’s law explains how electric field will interact with
A. electric field
B. magnetic field
C. battery
D. none of these

Ans. B

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