# Machine Design MCQ Question with Answer

## Machine Design MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 1
In composite or reverse laid ropes

Direction of twist of wires in strands is opposite to the direction of twist of strands
Direction of twist of wires and strands are same
Wires in two adjacent strands are twisted in opposite direction
Wires are not twisted

Question No : 2
Which of the following screw thread is used for power transmission in one direction only?

Question No : 3
Eulers formula for a mild steel column is not valid if the slenderness ratio is

90
60
120
100

Question No : 4
Two shafts A and B are made of the same material. The diameter of shaft A is twice as that of shaft B. The power transmitted by the shaft A will be __________ of shaft B.

Twice
Four times
Eight times
Sixteen times

Question No : 5
Cap screws are

Similar to small size tap bolts except that a greater variety of shapes of heads are available
Slotted for a screw driver and generally used with a nut
Used to prevent relative motion between parts
Provided with detachable caps

Question No : 6
When a hole of diameter d is punched in a metal of thickness 't', then the force required to punch a hole is equal to (where τu = Ultimate shear strength of the material of the plate)

d.t.τu
πd.t.τu
π/4 × d².τu
π/4 × d² × t.τu

Question No : 7
If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (neglecting centrifugal tension) will be equal to

P1 - P2
P1 + P2
2 × (P1 + P2)
[2 × (P1 + P2)] + Pc Where Pc is centrifugal tension