from left to right
from right to left
first from left to right and then from right to left
either from left to ri
✅ The correct answer is option B.
Mechanical Engineering MCQs
A Pelton wheel develops 1750 kW under a head of 100 metres while running at 200 r.p.m. and discharging 2500 litres of water per second. The unit speed of the wheel is
10 r.p.m.
20 r.p.m.
40 r.p.m.
80 r.p.m.
✅ The correct answer is option B.
Producer gas is obtained by
partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
carbonisation of bituminous coal
passing steam over incandescent coke
passing air and a larg
✅ The correct answer is option A.
A closely coiled helical spring is of mean diameter (D) and spring wire diameter (d). The spring index is the ratio of
1/d
1/D
D/d
d/D
✅ The correct answer is option C.
A motor car moving at a certain speed takes a left turn in a curved path. If the engine rotates in the same direction as that of wheels, men due to centrifugal force
the reaction on me inner wheels increases and on the outer wheels decreases
the reaction on the outer wheels increases and on the inner wheels decreases
the reaction on the front wheels increases and on the rear wheels decreases
the reaction on the re
✅ The correct answer is option B.
The sensible heat during humidification process decreases.
TRUE
FALSE
✅ The correct answer is option B.
When two helical springs of equal lengths are arranged to form a cluster spring, then
shear stress in each spring will be equal
load taken by each spring will be half the total load
all of the above
none of these
✅ The correct answer is option C.
The force exerted by a moving fluid on an immersed body is directly proportional to the rate of change of momentum due to the presence of the body. This statement is called
Newton’s law of motion
Newton’s law of cooling
Newton’s law of viscosity
Newton’s law of resist
✅ The correct answer is option D.
The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is
β/2
30° + β/2
45° + β/2
60° + β/2
✅ The correct answer is option C.
The ductility is the property of a material due to which it
can be drawn into wires
breaks with little permanent distortion
can be rolled or hammered into thin sheets
can resist fracture du
✅ The correct answer is option A.