1. The gear used for transmission of power at right angle is called ?

spur gear

rake and pinion

bevel gear

nota

Answer: bevel gear

Explanation:


2. _______ is acid proof, water proof and is not affected by animal oils or alkaliies ?

rubber belt

cotton belt

leather belt

balata belt

Answer: balata belt

Explanation:


3. Which of the following is not a positive contact type clutch ?

square jaw clutch

spiral jaw clutch

tooth clutch

disc or plate clutch

Answer: disc or plate clutch

Explanation:


4. The included angle of a pulley from a v belt is ?

20° to 30°

30° to 40°

60° to 70°

70° to 80°

Answer: 30° to 40°

Explanation:


5. The rim of the pulley of a flat belt drive is slightly crowned to ?

Prevent the belt from running of the pulley

increase the tightness of the belt on the pulley

increase the torque transmission

improve the strength of the pulley

Answer: Prevent the belt from running of the pulley

Explanation:


6. The ratio of pitch circle diameter to the number of teeth in a gear is ?

addendum

dedendum

module

pitch

Answer: module

Explanation:


7. Which one of the following clutch provides a positive drive ?

cone clutch

dog clutch

single clutch

centrifugal clutch

Answer: dog clutch

Explanation:


8. The efficiency of power transmission is maximum in case of ?

rope drive

flat belt drive

chain drive

v-belt drive

Answer: chain drive

Explanation:


9. Coupling is used to ________ ?

strengthen the shaft

increase the length of shaft

decrease the length of shaft

none of the above

Answer: increase the length of shaft

Explanation:


10. If it is required to bring the driven shaft to speed in a gradual manner, which type of type will be used ?

coupling

clutch

gear

belt

Answer: clutch

Explanation: