3-A-001: Electrical Elements
3-1A1:
The product of the readings of an AC voltmeter and AC ammeter is called:
Apparent power.
True power.
Power factor.
Current power.
3-1A2:
What is the basic unit of electrical power?
Watt.
Ohm.
Volt.
Ampere.
3-1A3:
What is the term used to express the amount of electrical energy stored in an electrostatic field?
Joules.
Coulombs.
Watts.
Volts.
3-1A4:
What device is used to store electrical energy in an electrostatic field?
Capacitor.
Battery.
Transformer.
Inductor.
3-1A5:
What formula would determine the inductive reactance of a coil if frequency and coil inductance are known?
XL = 2πfL
XL = πfL
XL = 1 / 2πfC
XL = 1 / R2+X2
3-1A6:
What is the term for the out-of-phase power associated with inductors and capacitors?
Reactive power.
Effective power.
True power.
Peak envelope power.
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