## AC Fundamentals, Circuit and Circuit Theory A heater is rated as 230 V, 10 kW, A.C. The value 230 V refers to

Peak voltage
R.m.s. voltage
Average voltage
None of the listed here

## AC Fundamentals, Circuit and Circuit Theory Which of the following waves has the highest value of peak factor ?

Square wave
Sine wave
Triangular wave
Half wave rectified sine wave

## AC Fundamentals, Circuit and Circuit Theory For a sine wave with peak value Emax ___________ the average value is

0.707 Emax
0.434 Emax
None of the listed here
0.636 Emax

## AC Fundamentals, Circuit and Circuit Theory The effective resistance of an iron-cored choke working on ordinary supply frequency is more than its true resistance because of

Iron loss in core
Increase in temperature
Skin effect
Capacitive effect between adjacent coil turns

## AC Fundamentals, Circuit and Circuit Theory Form Factor is the ratio of

r.m.s. value/average value
r.m.s. value/peak value
Average value/peak value
Average value/r.m.s. value

## AC Fundamentals, Circuit and Circuit Theory Ohm is unit of all of the following except

Resistance
Capacitive reactance
Inductive reactance
Capacitance