1. If a gear has 40 teeth with pitch circle diameter is 240, the module of the gear is ________ ?

3

6

9

12

Answer: 6

Explanation:


2. Find the speed of driven pulley when speed of driver pulley is 200 rpm, the diameter of driver and driven pulley are 20 cm and 40 cm respectively ?

100 rpm

200 rpm

300 rpm

400 rpm

Answer: 100 rpm

Explanation:


3. The forms of spline are _____ ?

Straight & involute spline

Straight & angular spline

Involute & angular spline

Involute & square spline

Answer: Straight & involute spline

Explanation:


4. Couplings are used to connect the shaft, when the shafts are __________ ?

to be joined permanently

to be disconnected often

in misalignment

to be disconnected often and to compensate a slight misalignment between two shaft

Answer: to be disconnected often and to compensate a slight misalignment between two shaft

Explanation:


5. The difference between the tangential speed in the belt and tangential speed of pulley power transmission is know as ?

slip

creep

dressing

none of the above

Answer: slip

Explanation:


6. In fast and loose pulley, fast pulley is a pulley which ?

is fitted on the shaft

run fast

runs independently

none of these

Answer: is fitted on the shaft

Explanation:


7. The radial depth of a tooth below the Pitch Circle is called ?

addendum

dedendum

clearance

backlash

Answer: dedendum

Explanation:


8. Which of the following chain drives provides noiseless and uniform motion ?

block chain

roller chain

inverted tooth chain

conveyor chain

Answer: inverted tooth chain

Explanation:


9. The coupling which allow positive transmission of power at larger angle is ?

plate coupling

universal coupling

slip type coupling

clamp coupling

Answer: universal coupling

Explanation:


10. A main purpose of using worm & worm wheel drive in machine & their accessories is to ?

transmit large torque

provide large speed reduction from worm shaft to worm wheel

transmit higher speeds

provide large speed reduction from worm wheel to worm shaft

Answer: provide large speed reduction from worm shaft to worm wheel

Explanation: