Electrical 1.1 midterm practice #1

A generator produces electrical energy by converting mechanical energy from a _____.

• heat source

• prime mover

• solar pv system

• chemical activity

The approximate output current for a single-phase, 22 kVA, 240V generator is _____.

• 50A

• 70A

• 90A

• 100A

In accordance with ANSI C84.1, the minimum voltage at the _____ cannot be less than 90 percent of the nominal system voltage.

• service

• utility

• equipment

• none of these

Normally _____ means that the contacts are open when the coil is de-energized.

• open

• closed

• powered

• none of these

The secondary voltage of a 4:1 turns ratio transformer is _____ if the primary is 240V.

• 60v

• 210v

• 208v

• 277v