TPC Transformers and AC Circuits Exam Questions and Answers.

TPC Transformers and AC Circuits Exam
Questions and Answers




Heat .and .____________ .are .the .main .problem .areas .in .transformers. .- .(correct .answer) .-Dirt

Transformer .gauges .indicate .the .correct .oil .level .at .a .temperature .of .- .(correct .answer) .-
25 .Degrees .Celsius

You .should .periodically .test .the .air .above .the .liquid .in .a .transformer .for .TCG, .which .stands .for .trans
former .- .(correct .answer) .-Combustible .Gas

Inductance .is .represented .in .equations .by .the .letter .- .(correct .answer) .-L

XL .= .2πfL .is .the .equation .for .the .____________ .reactance .of .a .coil. .- .(correct .answer) .-Inductive

Four .inductors .with .values .of .25 .h, .5 .h, .12 .h, .and .7 .h .are .connected .in .series. .What .is .the .total .ind
uctance .in .the .circuit? .- .(correct .answer) .-49.0 .h

One .farad .is .equal .to .1 .coulomb .per .volt. .A .coulomb .is .a .unit .of .- .(correct .answer) .-
Electrical .Charge

Complete .the .following .equation: .2π .radians .= .- .(correct .answer) .-360 .Degrees

In .a .parallel .RL .ac .circuit, .the .Pythagorean .theorem .can .be .used .to .calculate .- .(correct .answer) .-
Impedance

In .an .ac .circuit, .if .XL .and .XC .are .equal, .and .EL .and .EC .are .equal, .the .circuit .is .said .to .be .- .
(correct .answer) .-At .Resonance

Connecting .capacitors .in .parallel ._________ .the .total .capacitance. .- .(correct .answer) .-Increases

The .unit .of .measurement .of .capacitance .is .the .- .(correct .answer) .-Farad

Capacitor .plates .are .usually .made .of .- .(correct .answer) .-Metal .Foil