Mechanical Systems (chain and belt)

What is the main function of belts in mechanical systems?

• To increase the speed of shafts

• To connect shafts and help transmit power

• To reduce the friction between components

• To cool down the machines

Which type of belt is commonly used for power transmission in many systems including automobiles and washing machines?

• Flat belt

• V-belt

• Toothed belt

• HRD synchronous belt

What is a unique feature of ribbed V-belts compared to standard V-belts?

• They can only be used in light load applications

• They are less flexible

• They combine the grip of a V-belt with the flexibility of a flat belt

• They are made from metal only

What is the purpose of using toothed or synchronous belts in mechanical systems?

• To provide a lighter load

• To decrease the grip of the belt

• To give a more positive drive

• To increase the friction

What can high speeds on belt drives cause due to centrifugal effects?

• Increased efficiency

• Decreased noise

• Loss of grip

• Increased power transmission

What is the purpose of idler pulleys in a car engine's serpentine belt setting?

• To increase the speed of the belt

• To tension the flat belts

• To connect different engine parts

• To reduce the width of the belt

What type of belt provides about three times the grip compared to a flat belt?

• Synchronous belt

• Cam belt

• V-belt

• HTD belt

Which belt is used in car engines and helps in altering the valve timing?

• Synchronous belt

• V-belt

• HTD belt

• Cam belt

What is the recommended speed limit for synchronous and HRD belts?

• 20 m/s

• 40 m/s

• 60 m/s

• 80 m/s

What is the main purpose of chain drives?

• To reduce power between parallel shafts

• To increase friction between components

• To transmit power between parallel shafts

• To cool down the components