Unit 05 Review Pack 04

What is the full load current for a 100-hp three-phase synchronous motor if the armature voltage rating is 460 V?

• 200.0 A

• 100.0 A

• 150.0 A

• 125.0 A

The maximum-demand running current can be used in ……………………………….

• sizing electrical equipment and systems

• determining wire length

• calculating voltage drop

• measuring insulation resistance

Which electrical device is shown in the picture?

• Light bulb

• Refrigerator

• Unknown device without the image

• Washing machine

Determine the maximum-demand starting current and maximum-demand running current for a 120-V DC feeder supplying five 3-hp motors, four 5-hp motors, and two 10-hp motors. The protection device is an inverse time breaker.

• Maximum-demand starting current: 1800 A, Maximum-demand running current: 300 A

• Maximum-demand starting current: 2056.5 A, Maximum-demand running current: 342.75 A

• Maximum-demand starting current: 1500 A, Maximum-demand running current: 250 A

• Maximum-demand starting current: 2200 A, Maximum-demand running current: 400 A

What is the full load current for a 100-hp three-phase synchronous motor if the armature voltage rating is 460 V?

• 100.0 A

• 200.0 A

• 150.0 A

• 125.0 A

The maximum-demand running current can be used in ……………………………….

• measuring voltage levels

• determining wire lengths

• calculating the capacity of electrical systems

• calculating insulation resistance

Which electrical device is shown in the picture?

• Inductor

• Voltage regulator

• Capacitor

• overload relay

Determine the maximum-demand starting current and maximum-demand running current for a 120-V DC feeder supplying five 3-hp motors, four 5-hp motors, and two 10-hp motors. The protection device is an inverse time breaker.

• Maximum-demand starting current: 1200 A, Maximum-demand running current: 250 A

• Maximum-demand starting current: 800 A, Maximum-demand running current: 400 A

• Maximum-demand starting current: 1713.75 A, Maximum-demand running current: 342.75 A

• Maximum-demand starting current: 500 A, Maximum-demand running current: 100 A

What is the full load current for a 100-hp three-phase synchronous motor if the armature voltage rating is 460 V?

• 100.0 A

• 150.0 A

• 200.0 A

• 125.0 A

The maximum-demand running current can be used in ……………………………….

• Calculating voltage drop

• Determining wire gauge

• Assessing insulation resistance

• Electrical system capacity planning