A4/B3 Maintenance Assessment Power transmission system

What does AMC stand for in the context of equipment maintenance?

• Automated Machine Calibration

• Annual Maintenance Contract

• Active Maintenance Checklist

• Annual Machinery Contract

Which type of gear is used to change the direction of rotation in a mechanical system?

• Bevel gear

• Worm gear

• Helical gear

• Spur gear

In a power transmission system, what is the function of a gearbox?

• To store excess power

• To change the speed and torque of the output

• To regulate voltage levels

• To convert electrical energy to mechanical energy

What is the role of a belt drive in a mechanical power transmission system?

• To transfer power between shafts

• To change the speed and torque of the output

• To convert electrical energy to mechanical energy

• To store energy

In a mechanical system, what is the function of a universal joint coupler?

• To convert electrical energy into mechanical energy

• To provide high torque transmission

• To store energy

• To allow for angular misalignment between shafts

In a bevel gear system, what is the angle between the intersecting shafts?

• 60 degrees

• 120 degrees

• 45 degrees

• 90 degrees

What is the difference between a spur gear and a helical gear?

• Spur gears have teeth parallel to the axis, while helical gears have teeth at an angle to the axis

• Spur gears have curved teeth, while helical gears have straight teeth

• Spur gears are used in high-speed applications, while helical gears are used in low-speed applications

• There is no difference, the terms are interchangeable

What is the primary purpose of a clutch in a mechanical power transmission system?

• To change the speed and torque of the output

• To transfer power between shafts

• To engage or disengage power transmission between two rotating shafts

• To provide high torque transmission

What is the purpose of brushes in a DC motor?

• To reverse the direction of rotation

• To supply power to the Magnet

• To increase motor efficiency

• To transfer electrical energy to the commutator

In a DC motor, if the direction of the applied current is reversed, what happens to the direction of rotation?

• Rotation becomes erratic

• Rotation remains the same

• Rotation stops

• Rotation reverses