Practice quiz 2 Unit 7

Testing energized switch can be done via

• Megger

• Ohmmeter

• Voltmeter

• Wattmeter

Which is considered an automatic switch

• Selector switch

• Push button

• Drum switch

• Photoelectric sensor

Switch selection criteria are based on

• Maximum voltage

• Normal voltage

• Minimum voltage

• Average Voltage

Testing non-energized switches can be done via

• Megger

• Ohmmeter

• Voltmeter

• Wattmeter

When wiring a switched circuit, the switch is always connected to

• earth

• line

• neutral

• load

The current measurement is the detection of…………... electrical fault.

• Short circuit

• Open circuit

• Ground fault

• Overload fault

If the number of secondary turns is greater than the number of primary turns?

• The voltage gets stepped up.

• The voltage gets stepped down.

• The power gets stepped up.

• The power gets stepped down.

A dry-type power transformer is observed to be operating above its rated temperature. What could be the cause?

• Overvoltage being applied to transformer.

• Lower than recommended ambient air.

• Transformer being loaded not greater than nameplate KVA rating.

• Unobstructed Transformer ventilation openings

An insulation check of transformer windings is made using a _______.

• Ammeter

• Ohmmeter

• Megger

• Voltmeter

A step-up transformer has 50 turns for the primary winding coil and 100 turns for the secondary winding coil. Determine the turns ratio

• 1:2

• 2:1

• 1:5

• 5:1