Category: Mechanical Engineering Mcqs
Incomplete combustion can be best judged by__________________?
A. smoky chimney exit
B. excess air in flue gases
C. measuring carbon mono-oxide in flue gases
D. measuring temperature of flue gases at exit of furnace
E. measuring oxygen in flue gases
Rivets are made of following type of material_________________?
A. tough
B. hard
C. resilient
D. ductile
E. malleable
The essential equipment for producing high vlotage for sparking in petrol engines with battery is_______________?
A. ignition coil
B. ignition coil and distributor
C. ignition coil and condenser
D. ignition coil and contact breaker
E. ignition coil, contact breaker and con-denser
Resultant pressure of the liquid in the case of an immersed body acts through____________________?
A. centre of gravity
B. centre of pressure
C. metacentre
D. centre of buoyancy
E. in between e.g. and centre of pressure
Value engineering aims at finding out the________________?
A. depreciation value of a product
B. resale value of a product
C. major function of the item and accomplishing the same at least cost without change in quality
D. break even point when machine re-quires change
E. selling price of an item
The unit of time in S.I. units is__________________?
A. second
B. minute
C. hour
D. day
E. year.
In vapour compression cycle the condition of refrigerant is superheated vapour _____________________?
A. after passing through the condenser
B. before passing through the condenser
C. after passing through the expansion or throttle valve
D. before [entering the expansion valve
E. before entering the compressor
In a refrigeration cycle, the flow of refrigerant is controlled by___________________?
A. compressor
B. condenser
C. evaporator
D. expansion valve
E. all of the above
Yield point in fatigue loading as compared to static loading is__________________?
A. same
B. higher
C. lower
D. depends on other factors
E. none of the above
Which of the following statements is correct ?
A. All the irreversible engines have same efficiency
B. All the reversible engines have same efficiency
C. Both Rankine and Caront cycles have same efficiency between same temperature limits
D. All reversible engines working between same temperature limits have same-efficiency
E. Between same temperature limits, both petrol and diesel engines have same efficiency
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