Electrical Fundamentals Quiz

When calculating power in a reactive or inductive ac circuit, the true power is

• Less than the apparent power.

• Less than the apparent power in a reactive circuit and more than the apparent power in an inductive circuit.

• More than the apparent power.

Which is correct concerning a parallel circuit?

• Total voltage drop is the same as the total resistance.

• Total resistance will decrease when one of the resistances is removed.

• Total resistance will be smaller than the smallest resistor.

.002KV equals

• 2.0 volts

• 20 volts

• 2 volt

What unit is used to express electrical power?

• Watt

• Ampere

• Volt

A 12-volt electric motor has 1,000 watts input and 1 hp output. Maintaining the same efficiency, how much input power will a 24-volt, 1 hp electric motor require? (Note: 1 hp = 746 watts)

• 1,000 watts

• 2,000 watts

• 500 watts

A 14-ohm resistor is to be installed in a series circuit carrying .05 ampere. How much power will the resistor be required to dissipate?

• At least 35 milliwats

• At least .70 milliwatt

• Less than .035 watt

Which term means .001 ampere?

• Kiloampere

• Microampere

• Milliampere

Through which material will magnetic lines of force pass the most readily?

• Copper

• Aluminum

• Iron

Which effect does not apply to the movement of electrons flowing in a conductor?

• Thermal energy

• Magnetic

• Static energy

When referring to an electrical circuit diagram, what point is considered to be at zero voltage?

• The ground reference.

• The switch.

• The circuit breaker.