30 to 40%
40 to 60%
60 to 70%
75 to 90%
✅ The correct answer is option D.
Mechanical Engineering MCQs
A square beam and a circular beam have the same length, same allowable stress and the same bending moment. The ratio of weights of the square beam to the circular beam is
1-Feb
1
1/1.12
1-Feb
✅ The correct answer is option C.
The draught may be produced by a
mechanical fan
chimney
a steam jet
all of these
✅ The correct answer is option D.
An oxidising process used for aluminium and magnesium articles is called
galvanising
anodising
parkerising
sheradising
✅ The correct answer is option B.
Which of the following statement is correct for steam turbines as compared to reciprocating steam engines?
A steam turbine develops higher speeds
The efficiency of steam turbine is higher
The steam consumption is less
all of these
✅ The correct answer is option D.
The acceleration of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by
ω2(r1 – r2)(1 – cos2θ)
ω2(r1 + r2)(1 + cos2θ)
ω2(r1 + r2)
ω2(r1 – r2)(1 – sin2 θ
✅ The correct answer is option C.
The basic purpose of tyre rotation on automobiles is to
avoid ply separation
equalize wear
get better ride
none of these
✅ The correct answer is option B.
The maximum height of a projectile on a horizontal plane, is
✅ The correct answer is option A.
Which of the following mechanism is an approximate straight line motion mechanism?
Watt’s mechanism
Grasshopper mechanism
Robert’s mechanism
all of these
✅ The correct answer is option D.
When the file is moved to and fro over the work, it is known as
cross filing
draw filing
pull and push filing
none of these
✅ The correct answer is option B.