Motors & Drives Assessed Learning Exam

Exam Question 1 *

True or False: AC induction motors are good in places where tight speed regulated is required.

True
False
Exam Question 2 *

What is the typical speed range of a DC motor?

100:1
5:1
50:1
20:1
None of the above
Exam Question 3 *

What is the main use of a Stepper motor?

High speed rotation
Position control
Rapid acceleration and reversing
All of the above
None of the above
Exam Question 4 *

Which of the following appears on the name plate information of a motor?

Current (FLA)
Torque
Frame size
All of the above
None of the above
Exam Question 5 *

What mechanism can control the speed of an AC induction motor?

Motor/generator set
Rheostat
Variable Frequency Drive
All of the above
None of the above
Exam Question 6 *

To keep a motor's torque constant, what changes along with the frequency in a VFD?

Voltage
Capacitance
Impedance
All of the above
None of the above
Exam Question 7 *

Which of the following is a common control method for a VFD?

Potentiometer
Pneumatic controller
Serial communications
All of the above
None of the above
Exam Question 8 *

Which of the following accessories reduces noise on the input side of a VFD?

EMI filter
Signal conditioner
Input fuse
All of the above
None of the above
Exam Question 9 *

What is the number one practice for maintaining AC motors and VFDs?

Run them occasionally
Keep them clean
Grease the bearings
All of the above
None of the above
Exam Question 10 *

Which of the following is a servo mode?

Velocity
Frequency
Resistance
All of the above
None of the above
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