nine times
six times
four times
two times
✅ The correct answer is option A.
Mechanical Engineering MCQs
Pearlite is a combination of 87% ferrite and 13% cementite.
Yes
No
✅ The correct answer is option A.
Vanadium when added to steel
increases tensile strength
decreases tensile strength
raises critical temperature
Sowers critical temper
✅ The correct answer is option A.
The Rankine’s constant for a mild steel column with both ends hinged is
1/750
1/1600
Jan-00
Jan-00
✅ The correct answer is option C.
The critical depth meter is used to measure
velocity of flow in an open channel
depth of flow in an open channel
hydraulic jump
depth of channel
✅ The correct answer is option C.
The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)
r sin φ
r cos φ
r tan φ
✅ The correct answer is option A.
The frictional torque transmitted in a flat collar bearing, considering uniform pressure, is (where r1 and r2 = External and internal radii of collar respectively)
μ W (r1 + r2)
μ W (r1 + r2)
✅ The correct answer is option D.
The ratio of Nusselt number and the product of Reynold’s number and Prandtl number is equal to
Stanton number
Biot number
Peclet number
Grashoff number
✅ The correct answer is option A.
The speed of the sprocket reduces as the chain pitch __________ for a given number of teeth.
increases
decreases
✅ The correct answer is option A.
When the water level on the downstream side of a weir is above the top surface of a weir, the weir is known as
narrow-crested weir
broad-crested weir
Ogee weir
submerged weir
✅ The correct answer is option D.