AC Voltage Controllers  Sample Electrical Engineering Job Questions, Practice Questions on AC Voltage Controller, Job Interview Questions, AC Voltage Controllers Written Test Questions:

What is an ac voltage controller?

Various types of ac voltage controllers

Various industrial applications

Principle of burst firing control for a single phase ac voltage controller

Draw:
Waveforms of source voltage, gating signals, Output voltage, source and output currents & voltage across one SCR for a single phase voltage controller feeding a resistive load.

Why will you control heater power by a triac using integral cycle control and not phase angle control?

What is power factor? Find its value for a single phase voltage controller feeding a resistive load circuit.

Find the relation between conduction angle and firing angle as a function of load phase angle for a single phase voltage controller.

Why can’t we regulate the output voltage of an AC voltage controller when firing angle is less than load phase angle?

Why is pulse gating good for R load but not for RL load in a single phase controller? Why is high frequency carrier gating used for RL loads?

Advantage of two stage sequence control over single phase full wave voltage controller

Comparison of two stage & multistage sequence control of voltage controllers

Why is multistage control preferred?

Why do we use controlled and bypass thyristors?

What are the two types of single phase voltage controllers
i)    with R load
ii)    with RL load