Machine Design MCQ with Answers

241) The bearings of medium series have capacity __________ over the light series.

Answer is:

30 to 40%

242) The antifriction bearings

Answer is:

all of these

Explanation:

The antifriction bearings
* have low starting and low running friction at moderate speeds
* have high initial cost
* can carry both radial and thrust loads

243) In a partial journal bearing, the angle of contact of the bearing with the journal is

Answer is:

120 Degree

244) A shaft coupling should

Answer is:

all of these

Explanation:

A shaft coupling should
* be easy to connect or disconnect
* transmit full power of the shaft
* hold the shafts in perfect alignment

245) In the levers of first type, the mechanical advantage is __________ one.

Answer is:

241) The bearings of medium series have capacity __________ over the light series.

30 to 40%

242) The antifriction bearings

all of these

243) In a partial journal bearing, the angle of contact of the bearing with the journal is

120 Degree

244) A shaft coupling should

all of these

245) In the levers of first type, the mechanical advantage is __________ one.

more than