The filament of an electric bulb is made of __________?
A. carbon
B. aluminum
C. tungsten
D. nickel
Category: Electrical Engineering Mcqs
Insulating materials have the function of __________?
A. preventing a short circuit between conducting wires
B. preventing an open circuit between the voltage source and the load
C. conducting very large currents
D. storing very high currents
Which of the following statement is true?
A. A galvanometer with low resistance in parallel is a voltmeter
B. A galvanometer with high resistance in parallel is a voltmeter
C. A galvanometer with low resistance in series is an ammeter
D. A galvanometer with high resistance in series is an ammeter
For which of the following ‘ampere second’ could be the unit?
A. Reluctance
B. Charge
C. Power
D. Energy
Which of the following materials has a negative temperature co-efficient of resistance?
A. Copper
B. Aluminum
C. Carbon
D. Brass
The S.I. unit of power is __________?
A. Henry
B. coulomb
C. watt
D. watt-hour
A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is __________?
A. 6.4 A, 6.9 A
B. 6.4 A, 9.6 A
C. 4.6 A, 6.9 A
D. 4.6 A, 9.6 A
A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is __________?
A. 400 Q
B. 600 Q
C. 800 Q
D. 1000 Q
The resistance of a copper wire 200 m long is 21 Q. If its thickness (diameter) is 0.44 mm, its specific resistance is around __________?
A. 1.2 x 10~8 Q-m
B. 1.4 x 10~8 Q-m
C. 1.6 x 10″”8 Q-m
D. 1.8 x 10″8 Q-m
Out of the following which is an insulating material?
A. Copper
B. Gold
C. Silver
D. Paper
