Which of the following material does not have body centred cubic structure?
A.Vanadium
B.Potassium
C.Lithium
D.Zirconium
E.Chromium
Category: Mechanical Engineering Mcqs
In spark plug the gap between the electrodes is
A.10 mm
B.around 5 mm
C.around 1 mm
D.less than 1 mm
One newton is equal to
A.103 dynes
B.104 dynes
C.105 dynes
D.106 dynes
E.107 dynes
An important factor to be taken into account while designing a core print is
A.Pattern material
B.Type of mould
C.Moulding sand characteristics
D.Pouring temperature
E.Buoyancy effect of molten material
Which one of the following measuring instruments is supposed to be most accurate?
A.Steel scale
B.Micrometer
C.Vernier caliper
D.Vernier dial gauge
E.Optical projector
Allen bolts are
A.Self locking bolts
B.Self-screwing bolts
C.Used on aircraft
D.Provided with hexagonal depression in head
E.Counter sunk
In case of belt conveyors, the bearings used for return idlers are
A.bush bearings
B.split bush bearings
C.cast iron bearings
D.anti-friction bearings
In which of the following cases it is possible for flow to occur from low pressure to high pressure?
A.Flow through a converging section
B.Adiabatic flow in a horizontal pipe
C.Flow of liquid in a vertical pipe
D.Flow of air downward in a pipe
E.None of the above
Which gas turbine has lest weight per bhp developed?
A.Simple open cycle gas turbine
B.Open cycle gas turbine with intercooling and reheating
C.Open cycle gas turbine with intercooling, reheating and regeneration
D.Closed cycle gas turbine
As compared to green sand in shell moulding cooling rate of cast metal is slow. Hence as compared to green sand castings, shell moulded castings will have
A.larger grain size
B.smaller grain size
