AC Generator Quiz 3

It is the sudden voltage drop in the generator windings due to load current surges on the generator.

• voltage dip

• voltage regulation

• voltage terminal

• voltage source

What are the functions of an automatic voltage regulator? (Choose three)

• overvoltage protection

• rapid response time with voltage stability

• undervoltage protection

• overheating protection

• power amplification

It describes how often or how frequently a complete AC waveform is produced.

• frequency

• speed

• period

• time

What is the typical voltage ratings of main generators?

• 440V, 60Hz

• 220V, 60Hz

• 208V, 60Hz

• 120V, 60Hz

Power ratings of emergency generators ranges from ___________.

• 10kW to 100kW

• 20kW to 200kW

• 100kW to 2MW

• 10kW to 100MW

To find the effective value (rms), ______________.

• multiply the peak value by 0.707

• multiply the peak value by 0.636

• multiply the peak value by 1.414

• divide the peak value by 0.707

Impedance is usually denoted by what letter?

• Z

• Y

• R

• delta

Another term for ac generator.

• alternator

• commutator

• armature

• stator

It is easier to insulate stationary armature winding than the rotating field winding.

• TRUE

• FALSE

What type of rotors are usually used in large power, high speed turbine drives?

• cylindrical type

• salient type

• armature type

• general purpose rotor type