In electrolus refrigerator
A.Ammonia is absorbed in water
B.Ammonia is absorbed in hydrogen
C.Hydrogen is absorbed in water
D.Ammonia evaporates in hydrogen
E.Hydrogen evaporates in ammonia
Category: Mechanical Engineering Mcqs
Usually the range of an instrument is selected such that
A.Minimum reading coincides with average value of working parameter
B.Minimum reading coincides with minimum value of the working parameter
C.For the working parameter the pointer direction is vertical
D.For the working parameter the pointer deflection is about ? of the full scale
The type of bearing suitable for high temperature applications where lubrication is impossible and where corrosion or chermical action limits choice of material, would be
A.Cast iron bearing
B.Jewel bearing
C.Needle bearing
D.Carbon graphite bearing
E.Aluminium bearing
The moment of a force
A.Occurs about a point
B.Measures the capacity to do useful work
C.Occurs only when bodies are in motion
D.Measures the ability to produce turning or twisting about an axes
E.None of the above
Which type of turbine is different from others?
A.Pelton wheel
B.Banki turbine
C.Girard turbine
D.Jonval turbine
E.Kaplan turbine
A body which is permanently deformed is said to have undergone
A.Elastic deformation
B.Limit of elastic deformation
C.Uniform deformation
D.Non-uniform deformation
E.None of the above
Rubber belts in case of belt conveyors are reinforced with
A.rayon
B.nylon
C.polyster
D.Any of the above
Which of the following is not a good way to provide freeze protection for a flat-plate collector system?
A.Use of movable insulation to cover the collector
B.Drain the collector when it is not operating during periods of low ambient temperatures
C.Circulate an antifreeze solution rather than water
D.Increase the rate of water flow through the collector by a factor of 2 leaving it on at all times
What is a laser?
A.Electro-magnetic waves
B.Ultrasonic waves
C.Supersonic waves
D.Light amplification by stimulated emission of radiation
In which of the following energy conversion takes place at ambient temperature?
A.Magnetohydrodynamic conversion
B.Thermionic generator
C.Battery producing electrical energy
D.Solar radiation
