EGSA Generator Load Management & Power Quality 2

Question 1

What is harmonic distortion in generator power output and why does it matter?

Accepted Answer

Distortion of the sine wave caused by non-linear loads, which can damage sensitive equipment

Answer

A musical tone produced by the generator engine

Answer

A type of mechanical vibration in the generator frame

Answer

Normal variation in voltage during startup

Question 2

What is paralleling in generator systems?

Accepted Answer

Connecting two or more generators to work together to supply a common electrical load

Answer

Running a generator alongside a battery backup system

Answer

Installing generators in a row for aesthetic purposes

Answer

Testing a generator while connected to utility power

Question 3

What conditions must be matched before paralleling two generators?

Accepted Answer

Voltage, frequency, phase angle, and phase rotation must all be matched

Answer

Only voltage needs to be matched

Answer

Only frequency needs to be equal

Answer

The generators just need to be the same brand

Question 4

What is the purpose of load bank testing for generators?

Accepted Answer

To apply a controlled artificial load to verify generator performance and prevent wet stacking

Answer

To charge batteries connected to the generator

Answer

To test the fuel system for leaks

Answer

To calibrate the voltmeter on the generator panel

Question 5

What is 'wet stacking' in diesel generator operation?

Accepted Answer

Accumulation of unburned fuel and carbon in the exhaust system due to prolonged operation at light loads

Answer

Water contamination of the diesel fuel tank

Answer

Condensation on the generator windings

Answer

Overflow of the radiator coolant system

Question 6

What is the function of an automatic voltage regulator (AVR) in a generator?

Accepted Answer

To maintain a constant output voltage by adjusting the excitation current to the generator's field winding

Answer

To regulate the engine speed under load

Answer

To control the flow of cooling air

Answer

To manage the fuel injection timing