Question 1

In a double-face clutch, both the armature and are mounted on a single hub with a double-faced friction lining supported between them.&#10;A)crossbar&#10;B)field discs&#10;C)stator&#10;D)rotor

Accepted Answer

In a double-face clutch, both the armature and field discs are mounted on a single hub with a double-faced friction lining supported between them. This configuration allows for efficient torque transmission from the motor to the driven equipment.

Question 2

Magnetic drives are used for applications requiring a(n) speed such as cranes, hoists, fans, compressors, and pumps.&#10;A)high&#10;B)constant&#10;C)input&#10;D)adjustable

Accepted Answer

Magnetic drives are used for applications requiring adjustable speed, allowing for precise control over the speed of equipment like cranes, hoists, fans, compressors, and pumps.

Question 3

Double-face clutches are available in sizes up to 60 inches in diameter.

Accepted Answer

As a language model AI, I cannot verify the current status of product availability. However, in general, double-face clutches are not commonly available in sizes as large as 60 inches in diameter.

Question 4

The single-face clutch consists of two discs.

Accepted Answer

The single-face clutch consists of two discs - a driving disc and a driven disc.

Question 5

The magnetic drive couples the motor to the magnetically.&#10;A)power supply&#10;B)line&#10;C)shield&#10;D)load

Accepted Answer

The magnetic drive couples the motor to the load magnetically, which allows for a non-contact transfer of torque and rotation. The power supply and line are not directly involved in the coupling, and a shield would be used for protection or shielding from electromagnetic interference. The magnetic drive couples the motor to the load magnetically, meaning there is no physical connection between the motor and the load. This allows for the transmission of power without the need for seals or mechanical couplings, reducing the risk of leaks and increasing efficiency.

Question 6

Machinery clutches were originally designed to engage very large motors to their loads after the motors had reached running speeds.

Accepted Answer

Machinery clutches were indeed designed to engage large motors to their loads after the motors had reached running speeds. Machinery clutches were developed to engage large motors to their loads once the motors had reached operational speeds.

Question 7

The electromagnetic coupling is one of the simpler ways to obtain an adjustable speed.&#10;A)output&#10;B)constant&#10;C)input&#10;D)highest

Accepted Answer

The electromagnetic coupling can be adjusted to control the output speed, making choice A the correct answer. The electromagnetic coupling can adjust the output speed by controlling the input current. Therefore, option A, "output," is the correct choice. Option B, "constant," is not correct because the coupling allows for adjustable speed, not constant speed. Option C, "input," is not correct because it is the output speed that is being adjusted. Option D, "highest," is not correct because the coupling can adjust the speed to any desired level, not just the highest possible speed.

Question 8

When starting conditions are severe, a clutch inserted between the motor and the load means that .&#10;A)an operator does not have to be present&#10;B)power to the motor can be interrupted&#10;C)the motor can run within its load capacity&#10;D)larger shaft sizes are needed for the output side

Accepted Answer

When starting conditions are severe, a clutch inserted between the motor and the load means that it can help the motor run within its load capacity. The clutch can provide a gradual engagement between the motor and the load, preventing sudden torque spikes and damage to the equipment. It also allows for better control over the speed and acceleration of the load. Therefore, the correct choice is C. Options A, B, and D are not relevant to the use of a clutch in this context. A clutch inserted between the motor and the load allows the motor to run within its load capacity even under severe starting conditions.

Question 9

The magnetic drive can be used as a clutch.

Accepted Answer

The magnetic drive can be used as a clutch by controlling the power to the magnetic field, which can either engage or disengage the drive. The magnetic drive can be used as a clutch by controlling the electromagnetic fields and providing variable levels of torque transfer.

Question 10

A tachometer generator generates a voltage that is exponentially related to its speed.

Accepted Answer

A tachometer generator generates a voltage that is linearly related to its speed. A tachometer generator typically generates a voltage that is linearly related to its speed.

Deck 56: Magnetic Clutch and Magnetic Drive