During first charge in cupola the time taken by material to melt is approximately
A.10 minutes
B.Half an hour
C.1 hour
D.2
E.5 to 6 hours
Category: Mechanical Engineering Mcqs
In case of worm and worm wheel, the maximum efficiency is obtained when
A.Worm is driver
B.Worm wheel is driver
C.Either of the worm or worm wheel is a driver
D.Depends on other factors
E.None of the above
Which of the following wage and salary criteria refer to organizationally internal wage determinants?
A.Ability to pay
B.Supply and demand
C.Cost of living
D.Prevailing pay
E.Union bargaining power
The moment of a force is
A.Equivalent to the sum of the moments acting on a body
B.Equivalent to the vertical sum of the moments acting on a body
C.Equivalent to the algebraic sum of the moments acting on a body
D.Equivalent to the sum of horizontal components of the moments on a body
E.Equivalent to the sum of horizontal as well as vertical components of the moments on a body
Which of the following decreases during adiabatic throttling of a perfect gas?
A.Temperature
B.Enthalpy
C.Entropy
D.pressure
Which type of rotary compressor is used in oil fired furnaces?
A.Sliding vane type blower
B.Screw compressor
C.Axial flow compressor
D.Centrifugal blower
Pressure cables are used for
A.High current ratings
B.Higher voltages
C.High KVA
D.High kW
E.Low power factors
The insulation material for a cable should have
A.High dielectric strength
B.High inechanical strength
C.Non-inflammability
D.Low cost
E.All of the above
An air vessel is provided at the summit in a syphone to
A.Regulate the flow
B.Increase discharge
C.Increase velocity
D.Avoid an interruption in the flow
E.Maintain pressure difference
As a general rule if facing on the friction disc are worn down to the rivet heads
A.Rivets should be replaced
B.Rivets head should be filed
C.The friction disc should be replaced
D.The clutch should be replaced
E.The linkage should be adjusted
