Select a common dimensionless parameter in fluid mechanics from the following:
A.Angular velocity
B.Kinematic viscosity
C.Specific gravity
D.Specific weight
E.None of the these answers
Category: Engineeeing Mcqs
Which of the following is the most suitable to measure a temperature of -250?C?
A.Constant-volume helium thermometer
B.Paltinum resistance thermometer
C.Radiation pyrometer
D.Ordinary mercury-in-glass themometer
In case of oil bath type air cleaner, the oil sediments formed by the dust must be removed
A.Every day
B.Weekly
C.Monthly
D.After about 500 km
E.After about 5000 km
If a pump is operating at 100 rpm, it should be a
A.centrifugal pump
B.rotory pump
C.reciprocating pump
D.sliding vane type pump
Oil rings are slotted to
A.Provide an escape for the oil that the slot edges cut from the cylinder wall
B.Reduce the bulk
C.Minimise friction
D.Better lubrication of cylinder walls
E.Remove oil from cylinder
A hydraulic intensifier is a device
A.To lift small quantities of water through large head by means of large quantity of water falling through small height
B.To generate high pressure
C.To increase the intensity of pressure of water by means of the energy of a large quantity of water at low pressure
D.To temporarily store the energy of water
E.None of the above
The magnitude of earthquake pressure on a dam varies as a function of
A.Frequency of vibration
B.Amplitude
C.Frequency of vibration and amplitude
D.Amplitude and intensity
E.Richard’s scale number
Radio active nuclear waste is treated in
A.Pulsed column extractor
B.Mixer settler extractor
C.Sieve plate extraction column
D.Bollman extractor
E.None of the above
For superheated steam in a nozzle the critical pressure ratio is
A.1
B.0.528
C.0.546
D.0.577
E.0.64
Which one of the following factors will not assist in improving thermal efficiency of a compression ignition engine?
A.Fine atomisation and even distribution of fuel
B.Minimum heat loss during combustion
C.Clear exhaust
D.High surface to volume ratio
E.Any of the above
