The raw material for mini steel plants is
A.Iron ore
B.Pig iron
C.Grey iron
D.CI and steel scrap
E.None of the above
Category: Mechanical Engineering Mcqs
The area inside the PV diagram for a diesel engine represents
A.heat supplied
B.work supplied
C.work done
D.change in entropy
The general energy equation is applicable to
A.Steady flow
B.Unsteady flow
C.Non-uniform flow
D.Turbulent flow
E.Laminar flow
Tidal power is the power generated from
A.Waves of the ocean
B.Rise and fall tides
C.Thermal energy of ocean water
D.Raw sea water
E.Chemicals in sea water
In die casting
A.the product surface is smooth and clean without the parting line
B.there is no need of air venting
C.there is no restriction of material, any material that can be poured can be cast
D.the heat loss from molten metal is fast as the mould is metallic
Which of the following sand must possess high refractoriness?
A.Backing sand
B.Parting sand
C.Facing sand
D.all of the above
All but one of the following possible steam generator test difficulties would cause the apparent performance to be poorer than it actually is. One item would make the performance look better than it really is. Identify the item
A.Steam flow meter reads low
B.Steam temperature gauge reads too high
C.HHV of fuel is determined incorrectly, being too high
D.Coad scales are inaccurate, reading high
For cutting mild steel the cutting angle of a chisel should be
A.55?
B.60?
C.70?
D.75?
E.35?
The processes or systems that do not involve heat are called
A.Isothermal processes
B.Equilibrium processes
C.Thermal processes
D.Steady processes
E.Adiabatic processes
Defrosting of evaporators is done because
A.Frosting is undersirable
B.Frosting increases refrigerating effect
C.Frosting retards heat flow
D.Frosting obstructs flow of refrigerant
E.Frosting may cause damage to equipment
