Question 1

The cemf produced in a shunt motor has no effect on the magnetic field of the shunt windings.

Accepted Answer

A) True 
 B)False

Question 2

In a series motor, the polarity of the field winding is typically reversed to control the direction of rotation.

Accepted Answer

A) True 
 B)False

Question 3

The damper windings in a synchronous motor are similar to those in an induction motor.

Accepted Answer

A) True 
 B)False

Question 4

When selecting a motor starter, the current rating of the starter must be less than the actual current that the starter will switch.

Accepted Answer

A) True 
 B)False

Question 5

The alternating field causes the rotor to rotate on the shaft, making one revolution for each half -cycle of the input AC power.

Accepted Answer

A) True 
 B)False

Question 6

In the AC motor as in the DC motor, the coil of wire wrapped around the poles form an electromagnet.

Accepted Answer

A) True 
 B)False

Question 7

One pound -foot is greater than one newton meter.

Accepted Answer

A) True 
 B)False

Question 8

In a wound rotor induction motor, slip rings connect the rotor electrically to an external resistor network.

Accepted Answer

A) True 
 B)False

Question 9

Resistance -start motor has a start winding, which is a coil made of many turns of heavy gauge wire.

Accepted Answer

A) True 
 B)False

Question 10

Which of the following terminal connections would be made to run this single phase AC motor in the low voltage mode?

Accepted Answer

A)  T1 to T3 to T5, T2 to T4 to T8, T6 to T7, and input across T1 and T2 
B)  T1 to T5, T2 to T3, T6 to T7, T3 to T8 and input across T1 and T4 
C)  T2 to T3 to T5, T4 to T8, T6 to T7, and input across T1 and T4 
D)  T1 to T5, T2 to T3 to T8, T6 to T7, and input across T1 and T4 
E)  T1 to T3 to T5 to T7, T2 to T4 to T6 to T8, and input across T1 and T2 
A)  T1 to T3 to T5, T2 to T4 to T8, T6 to T7, and input across T1 and T2 
B)  T1 to T5, T2 to T3, T6 to T7, T3 to T8 and input across T1 and T4 
C)  T2 to T3 to T5, T4 to T8, T6 to T7, and input across T1 and T4 
D)  T1 to T5, T2 to T3 to T8, T6 to T7, and input across T1 and T4 
E)  T1 to T3 to T5 to T7, T2 to T4 to T6 to T8, and input across T1 and T2

Question 11

Which is not an advantage of a wound rotor induction motor over a squirrel cage induction motor?

Accepted Answer

A)  Good running characteristics 
B)  Higher starting torque 
C)  Lower cost to produce 
D)  Smoother acceleration under heavy loads 
A)  Good running characteristics 
B)  Higher starting torque 
C)  Lower cost to produce 
D)  Smoother acceleration under heavy loads

Question 12

Which of the following is the same in the DC series motor and the universal motor?

Accepted Answer

A)  Field strength 
B)  Iron core composition 
C)  No -load speeds 
D)  Input power 
A)  Field strength 
B)  Iron core composition 
C)  No -load speeds 
D)  Input power

Question 13

Motor power is work multiplied by time.

Accepted Answer

A) True 
 B)False

Question 14

Shunt motors start with a very large load attached.

Accepted Answer

A) True 
 B)False

Question 15

Match the technique t o the component i t uses for braking,
-Plugging

Accepted Answer

A)  Resistor 
B)  Inductor 
C)  Power supply 
A)  Resistor 
B)  Inductor 
C)  Power supply

Question 16

Match the technique t o the component i t uses for braking,
-Dynamic

Accepted Answer

A)  Resistor 
B)  Inductor 
C)  Power supply 
A)  Resistor 
B)  Inductor 
C)  Power supply

Question 17

A laminated motor core can effectively eliminate flux losses.

Accepted Answer

A) True 
 B)False

Question 18

The shaft of the motor has the laminated core and commutator pressed into it.

Accepted Answer

A) True 
 B)False

Question 19

The amount of torque that a motor produces is measured by dividing the force a motor exerts by the distance between the center of the shaft and the point at which the force is applied.

Accepted Answer

A) True 
 B)False

Question 20

The speed of a shunt motor can be controlled by

Accepted Answer

A)  varying the armature current. 
B)  varying the field current. 
C)  varying the voltage across the field winding. 
D)  A and C 
E)  all of the above 
A)  varying the armature current. 
B)  varying the field current. 
C)  varying the voltage across the field winding. 
D)  A and C 
E)  all of the above

The cemf produced in a shunt motor has no effect on the magnetic field of the shunt windings.

In a series motor, the polarity of the field winding is typically reversed to control the direction of rotation.

The damper windings in a synchronous motor are similar to those in an induction motor.

When selecting a motor starter, the current rating of the starter must be less than the actual current that the starter will switch.

The alternating field causes the rotor to rotate on the shaft, making one revolution for each half -cycle of the input AC power.

In the AC motor as in the DC motor, the coil of wire wrapped around the poles form an electromagnet.

One pound -foot is greater than one newton meter.

In a wound rotor induction motor, slip rings connect the rotor electrically to an external resistor network.

Resistance -start motor has a start winding, which is a coil made of many turns of heavy gauge wire.

Which of the following terminal connections would be made to run this single phase AC motor in the low voltage mode?

Which is not an advantage of a wound rotor induction motor over a squirrel cage induction motor?

Which of the following is the same in the DC series motor and the universal motor?

Motor power is work multiplied by time.

Shunt motors start with a very large load attached.

Match the technique t o the component i t uses for braking, -Plugging

Match the technique t o the component i t uses for braking, -Dynamic

A laminated motor core can effectively eliminate flux losses.

The shaft of the motor has the laminated core and commutator pressed into it.

The amount of torque that a motor produces is measured by dividing the force a motor exerts by the distance between the center of the shaft and the point at which the force is applied.

The speed of a shunt motor can be controlled by

Introduction to Industrial Control Systems, Discrete Control Input and Output Devices

Solidstate Devices in Industrial Applications, Operational Amplifiers and Linear ICS

SCRS, Triacs, Other Thryristors, Discrete Automation Sensors and Devices

Analog Processes Control Devices, Sensors and Safety

Special Purpose Motor, Control Devices and Programmable Logic Controllers

Embedded Microcontrollers, Open and Closed Loop Process Control

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Exam 5: DC Motors, Control Circuits, AC Motors and Variable Speed Drives

The cemf produced in a shunt motor has no effect on the magnetic field of the shunt windings.

In a series motor, the polarity of the field winding is typically reversed to control the direction of rotation.

The damper windings in a synchronous motor are similar to those in an induction motor.

When selecting a motor starter, the current rating of the starter must be less than the actual current that the starter will switch.

The alternating field causes the rotor to rotate on the shaft, making one revolution for each half -cycle of the input AC power.

In the AC motor as in the DC motor, the coil of wire wrapped around the poles form an electromagnet.

One pound -foot is greater than one newton meter.

In a wound rotor induction motor, slip rings connect the rotor electrically to an external resistor network.

Resistance -start motor has a start winding, which is a coil made of many turns of heavy gauge wire.

Which of the following terminal connections would be made to run this single phase AC motor in the low voltage mode?

Which is not an advantage of a wound rotor induction motor over a squirrel cage induction motor?

Which of the following is the same in the DC series motor and the universal motor?

Motor power is work multiplied by time.

Shunt motors start with a very large load attached.

Match the technique t o the component i t uses for braking, -Plugging

Match the technique t o the component i t uses for braking, -Dynamic

A laminated motor core can effectively eliminate flux losses.

The shaft of the motor has the laminated core and commutator pressed into it.

The amount of torque that a motor produces is measured by dividing the force a motor exerts by the distance between the center of the shaft and the point at which the force is applied.

The speed of a shunt motor can be controlled by

Introduction to Industrial Control Systems, Discrete Control Input and Output Devices

Solidstate Devices in Industrial Applications, Operational Amplifiers and Linear ICS

SCRS, Triacs, Other Thryristors, Discrete Automation Sensors and Devices

Analog Processes Control Devices, Sensors and Safety

Special Purpose Motor, Control Devices and Programmable Logic Controllers

Embedded Microcontrollers, Open and Closed Loop Process Control

Industrial Robots, Automation Systems and Data Communication Between Intelligent Machines

Filters