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Engineering Mechanics MCQ Question with Answer

Engineering Mechanics MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.


Engineering Mechanics MCQ Question with Answer

Engineering Mechanics MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Download Engineering Mechanics MCQ Question Answer PDF

Question No : 15
The centre of gravity of a trapezium with parallel sides a and b lies at a distance of y from the base b, as shown in the below figure. The value of y is

h [(2a + b)/(a + b)]
(h/2) [(2a + b)/(a + b)]
(h/3) [(2a + b)/(a + b)]
(h/3) [(a + b)/(2a + b)]

Question No : 16
The maximum velocity of a particle moving with simple harmonic motion is

ω
ωr
ω2r
ω/r

Question No : 17
Work done is said to be zero, when

Some force acts on a body, but displacement is zero
No force acts on a body but some displacement takes place
Either (A) or (B)
None of the above

Question No : 18
A block of mass m1, placed on an inclined smooth plane is connected by a light string passing over a smooth pulley to mass m2, which moves vertically downwards as shown in the below figure. The tension in the string is

m1/m2
m1. g. sin α
m1.m2/m1 + m2
m1. m2.g (1 + sin α)/(m1 + m2)

Question No : 19
The maximum acceleration of a particle moving with simple harmonic motion is

ω
ωr
ω2r
ω/r

Question No : 20
If a number of forces act simultaneously on a particle, it is possible

Not a replace them by a single force
To replace them by a single force
To replace them by a single force through C.G.
To replace them by a couple

Question No : 21
Efficiency of a screw jack is given by (where α = Helix angle, and φ = Angle of friction.)

tan(α + φ)/tanα
tanα/tan (α + φ)
tan(α - φ)/tanα
None of these