Which of the following temperature is highest?
A.Melting point of gold
B.Melting point of steel
C.Melting point of tungsten
D.Melting point of zinc
E.Melting point of lead
Category: Mechanical Engineering Mcqs
Which one of the following is used for thermocouple junctions?
A.Elinvar
B.Manganin
C.Nichrome
D.Muntz metal
E.Duralumin
In S.I. engine if the spark plug deposit indicates black coating of soot, it therefore indicates that the engine has been generally operating on
A.Too lean mixture
B.Stoichiometric mixture
C.Most economical mixture
D.Slightly rich mixture
E.Too rich mixture
Specific speed for reaction turbine ranges from
A.3 – 710
B.10 – 110
C.125 – 180
D.200 – 300
E.More than 300
The type of grains usually preferred for moulding sand are
A.Round
B.Hemishperical
C.Cylindrical
D.Cubical
E.Sharp irregular shaped
The statement the resultant of the external forces applied to a body (rigid or non-rigid) composed of a system of particles is equivalent to the vector summation of the effective forces acting on all particles-is known as
A.Nowton’s law
B.Corollary to Newton’s laws of motion
C.Mohr’s principle
D.D’ Alembert’s principle
E.Principle of dynamics
The molecular volume of all the gases at 2 ata and 30?C is
A.1.0 cm-m
B.1.562 cu-m
C.8.48 cu-m
D.12.847 cu-m
E.25.794 cu-m
Brass is
A.Copper-zinc alloy
B.Copper-tin alloy
C.Copper-lead alloy
D.Copper-nickel alloy
E.Copper aluminium alloy
Cut of ratio in a steam engine is the ratio of
A.Pressure at cut off to supply pressure
B.Pressure at cut off to exhaust pressure
C.Pressure at cut off to mean effective pressure
D.Fraction of piston stroke which the piston has travelled when cut off occurs
E.Work done by piston after cut off to total work done per cylinder
For flow of petrol from fuel tank to the carburettor, the fuel system includes
A.An acceleration pump
B.A vacuum pump
C.A fuel pump
D.A suction pump
E.A float
