In a Diesel engine the duration between the time of injection and time of ignition is called
A.Period of ignition
B.Explosion period
C.Pre-ignition period
D.Delay period
E.Burning period
Category: Mechanical Engineering Mcqs
In multistage compression, perfect intercooling means
A.Temperature of air at inlet to subsequent stages is equal to initial temperature
B.Temperature of air at inlet to subsequent stages is less than initial temperature
C.Temperature of air at inlet to subsequent stages should be zero
D.Temperature of inlet to subsequent stages should be equal to the final temperature
E.None of the above
In case of cast iron castings, the shrinkage allowance is
A.7-10 mm/M
B.50-75 mm/M
C.75-100 mm/M
D.0.1-0.01 mm/M
E.1-0.1 mm/M
Highly skilled manpower is needed for the maintendance of which of the following power plants?
A.Diesel engine power plant
B.Gas turbine power plant
C.Hydro-electric power plant
D.Nuclear power plant
E.Steam power plant
In case of gears, the module is
A.The length of the pitch circule diameter per tooth
B.The number of teeth per unit length on pitch circle diameter
C.The pistance measured along the pitch circle from a point on one tooth to a corresponding point on the adjacent point
D.Any of the above
E.None of the above
In a system if the speed reduction of 60 : 1 is desired the convenient way is to use
A.Bevel gears
B.Simple gear train
C.Helical gears
D.Differential system
E.Worm and worm wheel
Metal spinning
A.Is done at low speeds
B.Is done on unsymmetrical articles
C.Is done on symmetrical articles
D.Does not require dies
E.Utilises point hard tools
Which of the following rotary compressor has two shafts?
A.Axial flow compressor
B.Sliding vane compressor
C.Centrifugal compressor
D.Lobe type compressor
Diesel locomotives in India are manufactured at
A.Bangalore
B.Parambur
C.Chitranjan
D.Varanasi
E.Ajmer
In automatic control systems what could be the source of process disturbances?
A.Changes in supply
B.Changes in demand
C.Changes in environmental and other associated variables
D.Change in set point
E.Any of the above
