Control devices

Control devices

University

15 Qs

quiz-placeholder

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Control devices

Control devices

Assessment

Quiz

Education

University

Medium

Created by

Azamat Bagitkaliyev

Used 1+ times

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What are contactors usually rated to switch current to?

Computers and servers

Motors, lights and heaters

Televisions and radios

Refrigerators and air conditioners

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following is true about NEMA designed contactors?

They are not serviceable

They are prevalent in non-US markets

They are only UL listed and rated

They are inherently touch safe

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following is true about IEC designed contactors?

They are serviceable in lower HP ratings

They are prevalent in enclosed starters and motor control centers (MCC)

They are comparatively smaller than NEMA contactors

They have six application choices from fractional to 400HP (480V)

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What does a Combination starter consist of?

A MSP and a relay

A MSP and a contactor

A contactor and a relay

A relay and a circuit breaker

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the primary function of a soft starter in a motor?

To vary the speed of the motor

To provide a reduced voltage motor start

To increase the inrush current

To provide branch circuit protection

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

In which scenario might a soft starter be used for a reduced torque motor start?

In a high-speed train where a sudden start could cause discomfort to passengers

In a computer fan where a sudden start could cause a system crash

In a wind turbine where a sudden start could cause structural damage

In a bottling conveyor where a sudden start or stop could damage the bottles

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

When are Variable Frequency Drives (VFDs) typically used?

When the speed of the motor needs to be constant

When the speed of the motor needs to be varied

When the motor needs to be stopped

When the motor needs to be started

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