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Engineering
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ME Set-1
Machine Design
117

Machine Design MCQ with Answers

117) The standard length of the shaft is

5 m

6 m

7 m

all of these

Answer is:

all of these

Explanation:

The standard length of the shaft is
* 5 m
* 6 m
* 7 m

Machine Design MCQ with Answers

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118) According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter of rivet hole (d) is obtained by

equating tearing resistance of the plate to the shearing resistance of the rivets

equating tearing resistance of the plate to the crushing resistance of the rivets

equating shearing resistance to the crushing resistance of the rivets

none of the above

Answer is:

none of the above

119) When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will

have contact at the bottom most of the bearing

move towards right of the bearing making the metal to metal contact

move towards right of the bearing making no metal to metal contact

move towards left of the bearing making metal to metal contact

Answer is:

move towards left of the bearing making metal to metal contact

120) A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as

sunk key

flat saddle key

hollow saddle key

tangent key

Answer is:

sunk key

121) When bevel gears having equal teeth and equal pitch angles connect two shafts whose axes intersect at right angle, then they are known as

angular bevel gears

crown bevel gears

internal bevel gears

mitre gears

Answer is:

mitre gears

Explanation:

When two non-parallel or intersecting, but coplaner shafts are connected by gears, then these gears are called bevel gears and the arrangement is known as bevel gearing.

When equal bevel gears (having equal teeth) connect two shafts whose axes are mutually perpendicular, then the bevel gears are known as mitre gears.

When bevel gears having equal teeth and equal pitch angles connect two shafts whose axes intersect at right angle, then they are known as

Machine Design MCQ with Answers

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117) The standard length of the shaft is

all of these

Machine Design MCQ with Answers

Related Machine Design MCQ with Answers

118) According to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter of rivet hole (d) is obtained by

none of the above

119) When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will

move towards left of the bearing making metal to metal contact

120) A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as

sunk key

121) When bevel gears having equal teeth and equal pitch angles connect two shafts whose axes intersect at right angle, then they are known as

mitre gears

Machine Design MCQ with Answers