A fluid is a substance that
A.Always sxpands until it fills any container
B.is practically imcompressible
C.deforms continuously when subjected to a shear stress no matter how small that shear stress may be
D.cannot be subjected to shear stress
Category: Mechanical Engineering Mcqs
If stage efficiency is S, blade efficiency is B and nozzle efficiency in N, then
A.N = B.S
B.S = B.N
C.B = SN
D.BSN = 1
Presence of sulphur in cast iron
A.retards fluidity
B.promotes brittleness
C.promotes oxidation
D.all of the above
Ash is abrasive as well as dusty. Which conveyor will be preferred for its handling?
A.Belt conveyor
B.Flight conveyor
C.Drag chain conveyor
D.Screw conveyor
In a CRO, ouput from which type of oscillator is applied to the horizontal deflection plate
A.square wave oscillator
B.sinusoidal wave oscillator
C.sawtooth wave oscillator
D.None of the above
In case of lower pairs
A.There is surface contact between the two elements while in the motion
B.There is line contact between the two elements while in the motion
C.There is point contact between the two elements while is motion
D.The contact is only at lower end of the two elements while in motion
E.None of the above
Thermal efficiency of cupola is in the range
A.80 to 90 percent
B.60 to 75 percent
C.50 to 65 percent
D.30 to 50 percent
Power assisted brakes are often provided on
A.motor cycles
B.air cooled engine vehicles
C.slow speed vehicles like road rollers etc.
D.heavy duty vehicles
One BTU is the amount of energy required to raise the temperature of
A.One gram of water through 1?C
B.One gram of water through 1?F
C.One kilogram of water through ?F
D.One pound of water through 1?C
E.One pound of water through 1?F
Which of the following is the ductile material?
A.Silver
B.Brass
C.Stainless steel
D.Zinc
E.Aluminium
