gear

What is the angle of arc of contact with pulley of equal dia?

• 120°

• 180°

• 45°

• 30°

What will be the factor on which power transmission by a belt depends?

• Centre distance between the two pulleys on which belt passing

• Depend on width of belt

• Diameter of pulley

• Slip of belt

What will be the velocity ratio equals to N2/N1 in a belt drive?

• d1/d2

• d2/r1

• d2/r1

• r2/d1

What is known as the upper side in a belt drive having less tension?

• Slack side

• tight side

• Driving distance

• Slip of belt

The Jockey pulley is fitted on the belt for...

• increase the arc of contact

• decrease the wrapping angle

• increase the rpm

• decrease the belt tension

What is the use of open belt drive?

• to rotate the driven pulley in same direction of driving pulley

• To rotate the driven pulley in opposite direction of driving pulley

• To get different velocity

• To maintain the maximum speed

What is known as due to localised movement of the belt resulting elastic stretch?

• slip

• creep

• crown

• lap

What is called the number of gears connected together?

• Gear system

• Gear train

• Gear line

• Gear network

What is the full form of PCD in gear?

• Pitch Circle Depth

• Pitch Circle Diameter

• Pitch Circle Dia

• Circular Diameter

How many types of gear teeth profile are generally used?

• 2

• 3

• 4

• 5