1. In a pair of gears the amount of clearance between mated gear teeth is called ?

addendum

dedendum

flank

backlash

Answer: backlash

Explanation:


2. When the situation is such that power has to be transmitted at an angle, the gears used are ?

spur gear

helical gear

bevel gear

herringbone gear

Answer: bevel gear

Explanation:


3. Fast and loose pulley drive configuration is used when ?

distance between driving and driven shaft is to large

velocity ratio is too large

low noise is required

it is required to start or stop driven shaft without disturbing driving shaft

Answer: it is required to start or stop driven shaft without disturbing driving shaft

Explanation:


4. Which one of the following statements is not true about cross belt drive ?

pulley rotate in opposite direction

belt angle on both the pulley is equal

belts wear very fast

used for transmission of speed at high power

Answer: used for transmission of speed at high power

Explanation:


5. If in a belt drive, the sense of rotation of both the pulleys is the same, the drive used is ?

open belt drive

cross belt drive

open or cross belt drive

none of the above

Answer: open belt drive

Explanation:


6. Which one of the following types of couplings gives a soft start ?

rigid coupling

muff coupling

spider coupling

fluid coupling

Answer: fluid coupling

Explanation:


7. Herringbone gears resemble two ___________ gears that have been placed side by side ?

spur

bevel

helical

face

Answer: bevel

Explanation:


8. Which of the following are used to run chains ?

splines

sprockets

coupling

trunnions

Answer: sprockets

Explanation:


9. Bevel gear is used to transmit power between shaft which are ?

parallel

co-axial

at an angle

none of the above

Answer: at an angle

Explanation:


10. Dedendum of a gear means ?

height of gear tooth above pitch circle

height of gear tooth below pitch circle

clearance of gear tooth

total gear tooth height

Answer: height of gear tooth below pitch circle

Explanation: