Question

1.What is the relation of ohm’s law?
A. V α R
B. I α R
C. V/R = constant
D. V α I
2.Resistors of 10 ohm and 20 ohm are connected in parallel. What is the equivalent resistance?
A. 2.5 Ω
B. 6.67 Ω
C. 0.15 Ω
D. 1.67 Ω
3.In duality concept, the voltage source can by replaced by ____________ source.
A. Current
B. Resistance
C. Inductor
D. Power
4.Three resistance each has value of 20 ohm are connected in delta network. Calculate the value of resistance for equivalent star network.
A. 30 ohm
B. 10 ohm
C. 60 ohm
D. 20 ohm
5. Permeability of vacuum is _____________
A. 4П * 10-6 F/m
B. 4П * 10-7 m/F
C. 4П * 10-7 F/m
D. 4П * 10-6 m/F
6. Newton/ Coulomb is the unit of _____________
A. Electric charge
B. Electric flux
C. Electric flux density
D. Electric field intensity
7. 1 μF = _____________F
A. 10-3
B. 10-6
C. 10-12
D. 10-9
8. Energy stored in capacitor is given by the formula ___________
A. 1⁄2 CV2
B. 1⁄2 CV
C. 1⁄2 QV
D. 1⁄2 QV2
9. Two capacitors of 10 F and 15 F are connected in series. What will be the equivalent valueof capacitance?
A. 6.03 F
B. 10 F
C. 0.166 F
D. 15 F
10.If voltage supplied to circuit is 15 V and resistance of the circuit is 3 ohm then what will be the value of current flowing through circuit?
A. 5 A
B. 2.5 A
C. 3 A
D. 15 A
11. An alternating EMF is represented by e= 400sin120πt V. What is the value of frequency?
A. 50 Hz
B. 25 Hz
C. 60 Hz
D. 55 Hz
12.If two inductors having inductances of 1 mH and 5 mH are connected in series, then what will be the the value of equivalent inductance of the circuit?
A. 6 mH
B. 2.5 mH
C. 1.5 mH
D. 5.2 mH
13.An alternating EMF is represented by e= 400sin120πt V. Maximum value of voltage
_________
A. 400 V
B. 300 V
C. 150 V
D. 100 V
14.An alternating current is represented by I= 200sin150πt A. What will be the value of
angular velocity?
A. 100π
B. 150π
C. 125π
D. 150
15.If voltage supplied to circuit is 10 V and resistance of the circuit is 5 ohm then what will be the value of current flowing through circuit?

A. 2.2 A
B. 2.1 A
C. 2 A
D. 1 A
16.If three resistances of 10 Ω, 20 Ω and 30 Ω are connected in series any circuit, what will be the equivalent resistance of circuit?
A. 60 Ω
B. 50 Ω
C. 70 Ω
D. 40 Ω
17.Resistors of 5 ohm and 2 ohm are connected in parallel. What is the equivalent resistance?
A. 1.43 ohm
B. 3 ohm
C. 4 ohm
D. 0.7 ohm
18. If in any delta network R12= 12 ohm, R23= 3 ohm and R31=5 ohm then, What will be the equivalent star resistance R1?
A. 2 ohm
B. 3 ohm
C. 20 ohm
D. 5 ohm
19.Three resistance each has value of 10 ohm are connected in star network. Calculate the value of resistance for equivalent delta network.
A. 30 ohm
B. 10 ohm
C. 100 ohm
D. 20 ohm
20. If resistances of 5 ohm and 20 ohm are connected in series and supply voltage is 100 V. What will be the value of current?
A. 4 A
B. 5 A
C. 7 A
D. 10 A
21.1 pF = _____________F
A. 10-3
B. 10-6
C. 10-12
D. 10-9
22.Two capacitors of 10 F and 15 F are connected in parallel. What will be the equivalent value of capacitance?
A. 6.03 F
B. 10 F
C. 0.166
F D. 25 F

Answer 1

Explanation:

your answer are attached in the photo