Online Mechanical Engineering Test - Machine Design Test 2



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Instruction:

  • This is a FREE online test. DO NOT pay money to anyone to attend this test.
  • Total number of questions : 20.
  • Time alloted : 30 minutes.
  • Each question carry 1 mark, no negative marks.
  • DO NOT refresh the page.
  • All the best :-).


1.

A locking device extensively used in marine type connecting rod ends is a

A.
jam nut
B.
castle nut
C.
sawn nut
D.
ring nut

Your Answer: Option (Not Answered)

Correct Answer: Option D

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2.

The V-belts are particularly suitable for __________ drives.

A.
short
B.
long

Your Answer: Option (Not Answered)

Correct Answer: Option A

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3.

The ratio of driving tensions in V-belt drives is __________ flat belt drives.

A.
equal to
B.
sin α times more than
C.
sin α times less than
D.
cosec α times more than

Your Answer: Option (Not Answered)

Correct Answer: Option D

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4.

Which of the following has threads at both ends?

A.
Bolt
B.
Tap bolt
C.
Stud
D.
none of these

Your Answer: Option (Not Answered)

Correct Answer: Option C

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5.

A screw is specified by its

A.
major diameter
B.
minor diameter
C.
pitch diameter
D.
pitch

Your Answer: Option (Not Answered)

Correct Answer: Option A

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6.

A thin spherical shell of internal diameter d is subjected to an internal pressure p. If V is the storage capacity of shell, then its diameter will be

A.
B.
C.
D.

Your Answer: Option (Not Answered)

Correct Answer: Option B

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7.

Two rigid plates are clamped by means of bolt and nut with an initial force F. After tightening, a separating force P (P < F) is applied to the lower plate, which in turn acts on the nut. The tension in the both after this is

A.
F + P
B.
F - P
C.
P
D.
F

Your Answer: Option (Not Answered)

Correct Answer: Option A

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8.

The shear stress at a point in a shaft subjected to a torque is

A.
directly proportional to the polar moment of inertia and to the distance of the point from the axis
B.
directly proportional to the applied torque and inversely proportional to the polar moment of inertia
C.
directly proportional to the applied torque and the polar moment of inertia
D.
inversely proportional to the applied torque and the polar moment of inertia

Your Answer: Option (Not Answered)

Correct Answer: Option B

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9.

A bolt is designed on the basis of __________ with a large factor of safety.

A.
direct tensile stress
B.
direct compressive stress
C.
direct bending stress
D.
direct shear stress

Your Answer: Option (Not Answered)

Correct Answer: Option A

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10.

When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is

A.
bending stress only
B.
a combination of torsional shear stress and bending
C.
direct shear stress only
D.
a combination of bending stress and direct shear stress

Your Answer: Option (Not Answered)

Correct Answer: Option A

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11.

In radial bearings, the load acts __________ to the axis of rotation.

A.
parallel
B.
perpendicular

Your Answer: Option (Not Answered)

Correct Answer: Option B

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12.

Which of the following statement is correct ?

A.
The cold rolled shafting is stronger than hot rolled shafting
B.
The hot rolled shafting is stronger than cold rolled shafting
C.
The cold rolled and hot rolled shafting are equally strong
D.
The shafts are not made by rolling process

Your Answer: Option (Not Answered)

Correct Answer: Option A

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13.

In a turnbuckle, if one of the rods has left hand threads, then the other rod will have

A.
right hand threads
B.
left hand threads
C.
multiple threads
D.
pointed threads

Your Answer: Option (Not Answered)

Correct Answer: Option A

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14.

A hollow shaft will transmit a __________ torque than a solid shaft of the same mass and same material.

A.
smaller
B.
greater

Your Answer: Option (Not Answered)

Correct Answer: Option B

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15.

When a cylinder is subjected to a very high internal fluid pressure, the thin cylinder should be used.

A.
Correct
B.
Incorrect

Your Answer: Option (Not Answered)

Correct Answer: Option B

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16.

The pitch diameter is the __________ diameter of an external or internal screw thread.

A.
effective
B.
smallest
C.
largest

Your Answer: Option (Not Answered)

Correct Answer: Option A

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17.

The diameter of knuckle pin in a knuckle joint is usually taken as (where d = Diameter of the rod)

A.
0.5 d
B.
0.8 d
C.
d
D.
1.2 d

Your Answer: Option (Not Answered)

Correct Answer: Option C

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18.

When carbon in the cast iron is in the form of cementite, the cast iron will be of white colour.

A.
Correct
B.
Incorrect

Your Answer: Option (Not Answered)

Correct Answer: Option A

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19.

The strength of a riveted joint is equal to

A.
tearing strength of plate (Pt)
B.
shearing strength of rivet (Ps)
C.
crushing strength of rivet (Pc)
D.
least value of Pt Ps and Pc

Your Answer: Option (Not Answered)

Correct Answer: Option D

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20.

The V-belt is used to transmit great amount of power and when the two pulleys are very near to each other.

A.
Correct
B.
Incorrect

Your Answer: Option (Not Answered)

Correct Answer: Option A

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