Use of flux in melting of magnesium
A.separates out impurities
B.prevents burning of magnesium alloys
C.facilitates production of sound cstings
D.all of the above
Category: Engineeeing Mcqs
The variable stress below which the probability of failure of a material is negligible, is called
A.Elastic limit
B.Plastic limit
C.Yield point
D.Endurance limit
E.Tolerance limit
Coulomb’s law for the force between electric charges most closely resembles
A.Newton’s laws of motion
B.Law of conservation of energy
C.Gauss’s theorem
D.Newton’s law of gravitation
E.None of the above
In a Diesel engine the function of a fuel injector is
A.To mix fuel and air
B.To ignite air-fuel mixture
C.To provide flame front for ignition
D.To spray atomized fuel in the cylinder
E.To provide adequate air fuel mixture for combustion
Which cheque can be encashed by any one
A.Account payee cheque
B.Crossed cheque
C.Bearer cheque
D.none of the above
Die casting dies are generally made of
A.cast iron
B.aluminium alloys
C.alloy steels
D.bronze
Plank’s law of radiation is applicable to
A.Radiation of any kind
B.Temperature radiation
C.Monochromatic radiation
D.Thermal radiation
E.None of the above
The material for wire drawing should have
A.High hardness
B.High ductility
C.High melting point
D.Low boiling point
E.Stiffness
The Carnot refrigeration cycle
A.transfers energy from a low level of temperature to a high level of temperature
B.requires the addition of external work for its operation
C.performs the reverse effect of the heat engine
D.all of the above
The price of diamonds is higher than the price of wheat because
A.Diamonds are much heavier than wheat
B.Diamonds are more useful than wheat
C.The total stock of diamonds is more useful than the total stock of wheat
D.Diamonds cannot be grown whereas wheat can be grown
E.Enough people have a higher subjective value of diamonds relative to wheat
