Electrical Examination Questions

In sizing feeder conductors in long feeder runs, one important factor to consider is

• Insulation

• Voltage drop

• Feeder protection

• Ground fault current

When cleaning an electrical equipment -

• The source is alive

• A voltmeter is used

• Water with soap are used for cleaning

• The supply lines are opened

A lighting fixture is to be controlled independently from two different locations. The type of switch required in each of the two location is

• Single-pol, single-throw

• Single-pole, double-throw

• Double-pole, single throw

• Double-pole, single-throw

In climbing ladder, you must position the ladder-

• 30° from the vertical

• 35° from the vertical

• 45° from vertical

• 75 from vertical

What is the maximum height of a lighting switch

• 1.5 meters

• 1.75 meters

• 2.0 meters

• 2.5 meters

Connecting the metal frames of equipment-to-ground is called-

• System grounding

• Isolated grounding

• Lightning protection

• Equipment grounding

What type of switch is used to control one lamp from two locations?

• Toggle switch

• Three-way switch

• Single pole switch

• Triplex switch

Before you can detect developing problem, you must-

• Be certified troubleshooter

• Recognize normal operation

• Read the maintenance manuals

• Memorize all the machines parts

To cut rigid conduit, you should

• Use a cold chisel and ream the ends

• Use a 3-wheel pipe cutter

• Use a hacksaw and ream the ends

• Order to cut to size

What is the largest size of commercially available solid conductor.

• 3.0 mm

• 3.5 mm

• 3.6 mm

• 3.2 mm