Which material has the best damping capacity
A.High speed steel
B.Stainless steel
C.Mild steel
D.Cast iron
E.Diamond
Category: Mechanical Engineering Mcqs
A critical depthmeter is always
A.Associated with surge
B.Associated with water hammer
C.Associated with hydraulic jump
D.Associated with steep gradient
E.Associated with tranquil flow
A closed cubical box 0.8 m on each side is half filled with water and the other half being filled with oil of specific gravity 0.75. Now if the box is accelerated upwards at the rate of 4.905 m/sec2 the pressure difference in kg/m2 between the top and bottom layers would be
A.490.5
B.545.5
C.981
D.1050
E.1800
In oil burners air is supplied
A.To assist inflow of oil
B.To prevent clogging of burner
C.To improve combustion efficiency
D.To uniformly spray oil in combustion chamber
E.None of the above
The most common type of vapour absorption system in use for industrial application is
A.Freon 12 and water
B.Freon 22 and water
C.Ammonia and water
D.Brine and water
E.Hydrogen and water
Oil pan is attached
A.To the bottom of the cylinder block
B.In a separate unit away from the crankcase
C.At the top of the cylinder block
D.At the outside wall of the crank case
E.Adjacent to oil filters
Scheduling is
A.alloting a job to an operator
B.alloting a job to a machine
C.fixing the time of completition of a job
D.detailing the sequence of operation job wise and machine wise
Coarse grained steels
A.Are very tough
B.Are less tough
C.Do not have tendency to distort
D.Are denser
E.Are lighter
A cylindrical section having no joint is known as
A.Perfect section
B.Jointless section
C.Seamless section
D.Strong section
E.Stress free section
Which of the following equipment is installed in power plants to reduce air pollution due to smoke?
A.Desuperheaters
B.Electrostaric precipitators
C.Reheaters
D.Air filters
E.None of the above
