The incubation period of Typhoid bacillus causing typhoid fever is
A.1 to 3 days
B.3 to 5 days
C.7 to 21 days
D.20 to 30 days
Category: Mechanical Engineering Mcqs
The numerical value of Young’s modulus of elasticity in ascending order for glass, aluminium, copper, wrought iron and tungsten are given by
A.Tungsten, wrought, iron, copper, aluminium, glass
B.Wrought iron, copper, aluminium, glass, tungsten
C.Copper, aluminium, glass, tungsten, wrought iron
D.Aluminium, glass, copper, wrought, iron, tungsten
E.Glass, aluminium, copper, wrought, iron, tungsten
An electrometer is used for the measurement of
A.Voltages
B.Currents
C.Both (A) and (B) above
D.None of the above
Maximum hardness that can be achieved in plain carbon steel is of the order of
A.50 Rockwell ‘C’
B.66 – 67 Rockwell ‘C’
C.100 – 150 Rockwell ‘C’
D.80-85 Rockwell ‘C’
E.There is no such limit for hardness
A petrol engine fuel that knocks at a low speed
A.has a high octane rating
B.may not knock at high speed
C.will always knock at high speed
D.will have low fire point
A petrol engine as compared to diesel engine (both running at full load) is
A.More efficient
B.Less efficient
C.Equally efficient
D.Depend on other factors
E.None of the above
The number of degrees of freedom in case of diatomic gases is
A.2
B.3
C.4
D.5
E.6
High air-fuel ratio in gas turbines
A.Reduces the exhaust temperature
B.Improves thermal efficiency
C.Increases power output
D.Restricts damage to turbine blades
E.None of the above
The overall purpose of training, development is to
A.Increase organizational effectiveness
B.Increase profits
C.Prenant works obsolesence
D.Increase managrical effectiveness
E.None of the above
Which type of pump is preferred for pumping lubricating oil in automobile
A.Reciprocating type
B.Open impeller type
C.Centrifugal pump with impeller shrouded on one side only
D.Centrifugal pump with impeller shrouded on both sides
E.Gear pump
