mechanical mechatronics Quiz 5

Which of the following is the function that idler pulley’s perform in a belt system?

• Tension belts

• Transmit power

• Change speed

• Change the direction of the transmission.

Proper tension on a V-belt can best be described by:

• The highest tension the belt can withstand before stretching.

• The amount of tension that results in no slack during operation.

• The lowest tension at which the belt won’t slip under peak load.

• The amount of tension that reduces the thickness of the belt.

What is an important outcome of preventative maintenance of a belt system?

• To increase the life of the belt and sheaves.

• To reduce the required width of the belt.

• To satisfy OSHA requirements.

• To increase the speed of the belt and sheave.

Which of the following is the method by which speed is adjusted on a variable speed V-belt Drive?

• Change the width of the belt

• Change the speed of the driven shaft.

• Changing the width of the pulley groove.

• All of the above.

Which of the following is the position in which idlers are installed?

• Perpendicular to the pulleys.

• On the tight side of the belt.

• On the slack side of the belt.

• All of the above.

Which of the following is a cause for a cracked pulley bushing in a V-belt drive system?

• Improper pulley installation

• Insufficient tension

• Pulley’s misaligned

• Excessive heat

Which of the following happens when the load on a V-belt increases?

• The belt jumps teeth on the pulley.

• The belt rides to one side of the pulley

• The belt makes the pulley rotate faster

• The belt wedges into the groove of the pulley

Which of the following is the way notched V-belts provide an advantage over classical V-belts?

• Better in clutch applications.

• Better engagement with pulley teeth.

• Can operate over a smaller diameter pulley.

• All of the above.

When sheaves are specified, there are five common features. Which of these is NOT one of those Features?

• The number of grooves.

• Belt size and type

• Material

• Lubrication