What will be the duration of day and night if the earth shrinks to half the present radius?
A.24 hours
B.12 hours
C.6 hours
D.3 hours
Category: Mechanical Engineering Mcqs
An action probably engaged in by energetic manager is:
A.Controlling
B.Organizing
C.Decision making
D.Directing
E.None of the above
The cemented carbide tools are generally poor in
A.Compression
B.Tension
C.Shear
D.Torsion
E.None of the above
All of the following are examples of ceramic materials EXCEPT:
A.Bakelite
B.Aluminium oxide
C.Magnesium oxide
D.Glass
The knocking tendency in a compression ignition engine for a given fuel will
A.Enhance by reducing compression ratio
B.Enhance by increasing compression ratio
C.Depend on other factors
D.Increase to certain limits and then no change
E.None of the above
The flouride content in the drinking water should not exceed
A.200 mg/litre
B.150 mg/litre
C.100 mg/litre50 mg/litre
D.50 mg/litre
E.1 mg/litre
While designing a shaft, hub and a key, care is taken so that
A.Shaft is the stronger component
B.Hub is the strongest component
C.Key is the strongest component
D.Key is the weakest component
E.Shaft is the weakest component
Suppose that we have an ideal piece of glass with ? = 0. If ? = 0.09 where ? = transmissivity ? = reflectivity and ? = absorptivity
A.? = 0.09
B.? = 1
C.? + ? = 1
D.? + ? = 0
High horse power diesel engines are usually started by
A.Self-starter
B.Cranking
C.Self-starter or cranking
D.Batteries
E.Compressed air
Ultimate tensile strength is least in case of
A.Cast iron
B.Wrought iron
C.Mild steel
D.Low carbon steel
E.High carbon steel
