1. Which of the following mechanism is an approximate straight line motion mechanism ?

Watt's mechanism

Grasshopper mechanism

Robert's mechanism

all of these

Answer: all of these

Explanation:


2. The frictional torque transmitted by a disc or plate clutch is same as that of ?

flat pivot bearing

flat collar bearing

conical pivot bearing

truncated conical pivot bearing

Answer: flat collar bearing

Explanation:


3. The working depth of a gear is the radial distance from the ?

pitch circle to the bottom of a tooth

pitch circle to the top of a tooth

top of a tooth to the bottom of a tooth

addendum circle to the clearance circle

Answer: addendum circle to the clearance circle

Explanation:


4. The coriolis component of acceleration is taken into account for ?

slider crank mechanism

four bar chain mechanism

quick return motion mechanism

all of these

Answer: quick return motion mechanism

Explanation:


5. According to Kennedy's theorem, if three bodies move relatively to each other, their instantaneous centres will lie on a ?

straight line

parabolic curve

triangle

rectangle

Answer: straight line

Explanation:


6. When a slider moves on a fixed link having curved surface, their instantaneous centre lies ?

on their point of contact

at the centre of curvature

at the centre of circle

at the pin joint

Answer: at the centre of curvature

Explanation:


7. A body in motion will be subjected to coriolis acceleration when that body is ?

in plane rotation with variable velocity

in plane translation with variable velocity

in plane motion which is a resultant of plane translation and rotation

restrained to rotate while sliding over another body

Answer: restrained to rotate while sliding over another body

Explanation:


8. The face of the tooth is the ?

surface of the top of tooth

surface of tooth above the pitch surface

width of tooth below the pitch surface

width of tooth measured along the pitch circle

Answer: surface of tooth above the pitch surface

Explanation:


9. The two parallel and coplaner shafts are connected by gears having teeth parallel to the axis of the shaft. This arrangement is known as ?

spur gearing

helical gearing

bevel gearing

spiral gearing

Answer: spur gearing

Explanation:


10. The direction of linear velocity of any point on a link with respect to another point on the same link is ?

parallel to the link joining the points

perpendicular to the link joining the points

at 45° to the link joining the points

none of the above

Answer: perpendicular to the link joining the points

Explanation: