Question 1

If the polarity of the interpole winding is not matched to the polarity of the shunt field winding, the motor will overheat.

Accepted Answer

A) True 
 B)False

Question 2

If counter torque is greater than torque of the motor, then the motor doesn't turn but torque is still produced.

Accepted Answer

A) True 
 B)False

Question 3

Which is not an Ac motor drive?

Accepted Answer

A)  Resistance network drive 
B)  Flux vector drive 
C)  Variable voltage inverter drive 
D)  Pulse width modulation drive 
E)  Programmable motor drive 
A)  Resistance network drive 
B)  Flux vector drive 
C)  Variable voltage inverter drive 
D)  Pulse width modulation drive 
E)  Programmable motor drive

Question 4

One method for correcting plant power factor is connecting banks of capacitors across the input lines.

Accepted Answer

A) True 
 B)False

Question 5

The stator core and windings are coated in an epoxy resin to seal them from moisture invasion.

Accepted Answer

A) True 
 B)False

Question 6

In a system with a leading power factor, the phase of voltage leads the phase of the current.

Accepted Answer

A) True 
 B)False

Question 7

In the capacitor -start, induction -run motor, the capacitor generates a current in the start winding that lags the phase of the voltage input.

Accepted Answer

A) True 
 B)False

Question 8

In a three -phase motor, the voltages are 180 degrees out of phase with each other.

Accepted Answer

A) True 
 B)False

Question 9

In a shunt motor, the current flows from the positive power supply terminal through the shunt winding to the negative power supply terminal, with s similar current path through the armature winding.

Accepted Answer

A) True 
 B)False

Question 10

The differential compound motor and the cumulative compound motor are the same except the connection to the shunt field terminals.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is not a component of the stator?

Accepted Answer

A)  End plates 
B)  Terminal box 
C)  Windings 
D)  Core 
E)  Enclosure 
A)  End plates 
B)  Terminal box 
C)  Windings 
D)  Core 
E)  Enclosure

Question 12

The series motor controls rpm while at high speeds.

Accepted Answer

A) True 
 B)False

Question 13

The AC motor is better suited than the DC motor for those applications that require variable speeds.

Accepted Answer

A) True 
 B)False

Question 14

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

Accepted Answer

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

Question 15

The speed of a shunt motor can be controlled beyond its rated value by changing the amount of voltage across either the field or the armature winding.

Accepted Answer

A) True 
 B)False

Question 16

In a synchronous motor, the salient poles project outward from the shaft of the motor.

Accepted Answer

A) True 
 B)False

Question 17

The current required to run the AC motor flows through the thermal overload heater and bimetallic switch contacts.

Accepted Answer

A) True 
 B)False

Question 18

Match the following.
-Inverter

Accepted Answer

A)  Usually a thyristor bridge 
B)  Controls the phase of the current 
C)  Consists of solid-state switches 
D)  Provides signals for frequency control 
E)  Smooths regulated DC voltage 
A)  Usually a thyristor bridge 
B)  Controls the phase of the current 
C)  Consists of solid-state switches 
D)  Provides signals for frequency control 
E)  Smooths regulated DC voltage

Question 19

On a motor data plate, the type specifies the motor's enclosure.

Accepted Answer

A) True 
 B)False

Question 20

Match the following.
-Converter

Accepted Answer

A)  Usually a thyristor bridge 
B)  Controls the phase of the current 
C)  Consists of solid-state switches 
D)  Provides signals for frequency control 
E)  Smooths regulated DC voltage 
A)  Usually a thyristor bridge 
B)  Controls the phase of the current 
C)  Consists of solid-state switches 
D)  Provides signals for frequency control 
E)  Smooths regulated DC voltage

If the polarity of the interpole winding is not matched to the polarity of the shunt field winding, the motor will overheat.

If counter torque is greater than torque of the motor, then the motor doesn't turn but torque is still produced.

Which is not an Ac motor drive?

One method for correcting plant power factor is connecting banks of capacitors across the input lines.

The stator core and windings are coated in an epoxy resin to seal them from moisture invasion.

In a system with a leading power factor, the phase of voltage leads the phase of the current.

In the capacitor -start, induction -run motor, the capacitor generates a current in the start winding that lags the phase of the voltage input.

In a three -phase motor, the voltages are 180 degrees out of phase with each other.

In a shunt motor, the current flows from the positive power supply terminal through the shunt winding to the negative power supply terminal, with s similar current path through the armature winding.

The differential compound motor and the cumulative compound motor are the same except the connection to the shunt field terminals.

Which of the following is not a component of the stator?

The series motor controls rpm while at high speeds.

The AC motor is better suited than the DC motor for those applications that require variable speeds.

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

The speed of a shunt motor can be controlled beyond its rated value by changing the amount of voltage across either the field or the armature winding.

In a synchronous motor, the salient poles project outward from the shaft of the motor.

The current required to run the AC motor flows through the thermal overload heater and bimetallic switch contacts.

Match the following. -Inverter

On a motor data plate, the type specifies the motor's enclosure.

Match the following. -Converter

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

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

If the polarity of the interpole winding is not matched to the polarity of the shunt field winding, the motor will overheat.

If counter torque is greater than torque of the motor, then the motor doesn't turn but torque is still produced.

Which is not an Ac motor drive?

One method for correcting plant power factor is connecting banks of capacitors across the input lines.

The stator core and windings are coated in an epoxy resin to seal them from moisture invasion.

In a system with a leading power factor, the phase of voltage leads the phase of the current.

In the capacitor -start, induction -run motor, the capacitor generates a current in the start winding that lags the phase of the voltage input.

In a three -phase motor, the voltages are 180 degrees out of phase with each other.

In a shunt motor, the current flows from the positive power supply terminal through the shunt winding to the negative power supply terminal, with s similar current path through the armature winding.

The differential compound motor and the cumulative compound motor are the same except the connection to the shunt field terminals.

Which of the following is not a component of the stator?

The series motor controls rpm while at high speeds.

The AC motor is better suited than the DC motor for those applications that require variable speeds.

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

The speed of a shunt motor can be controlled beyond its rated value by changing the amount of voltage across either the field or the armature winding.

In a synchronous motor, the salient poles project outward from the shaft of the motor.

The current required to run the AC motor flows through the thermal overload heater and bimetallic switch contacts.

Match the following. -Inverter

On a motor data plate, the type specifies the motor's enclosure.

Match the following. -Converter

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