Basic Electrical Mcqs

One newton meter is same as_____________?

A. one watt
B. one joule
C. five joules
D. one joule second

1 angstrom is equal to______________?

A. 10-8 mm
B. 10″6 cm
C. 10″10 m
D. 10~14 m

Conductance : mho :: ____________?

A. resistance : ohm
B. capacitance : henry
C. inductance : farad
D. lumen : steradian

Which of the following can have negative temperature coefficient _____________?

A. Compounds of silver
B. Liquid metals
C. Metallic alloys
D. Electrolytes

When a voltage of one volt is applied, a circuit allows one micro ampere current to flow through it. The conductance of the circuit is___________?

A. 1 n-mho
B. 106 mho
C. 1 milli-mho
D. none of the above

Nichrome wire is an alloy of_____________?

A. lead and zinc
B. chromium and vanadium
C. nickel and chromium
D. copper and silver

If/, R and t are the current, resistance and time respectively, then according to Joule’s law heat produced will be proportional to_______________?

A. I2Rt
B. I2Rf
C. I2R2t
D. I2R2t*

A thermistor has_____________?

A. positive temperature coefficient
B. negative temperature coefficient
C. zero temperature coefficient
D. variable temperature coefficient

With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals_____________?

A. 10 W
B. 20 W
C. 40 W
D. 60 W

The number of electrons in the outer most orbit of carbon atom is___________?

A. 3
B. 4
C. 6
D. 7