⚙️Mechanical Engineering MCQs
Mechanical Engineering MCQs
488 MCQs241
An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is _________________?
A10m/sec2
B9.81 m/sec2
C10.2/m sec
D9.75 m/sec2 E. 9 m/sec
242
For very great pressures, viscosity of moss gases and liquids__________________?
Aremains same
Bincreases
Cdecreases
Dshows erratic behavior E. none of the above
243
Viscosity of water in comparison to mercury is_________________?
Ahigher
Blower
Csame
Dhigher/lower depending on temperature E. unpredictable
244
The bulk modulus of elasticity___________________?
Ahas the dimensions of 1/pressure
Bincreases with pressure
Cis large when fluid is more compressible
Dis independent of pressure and viscosity E. is directly proportional to flow
245
The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to_________________?
A1000
B2100
C2700
D10,000 E. 21,000
246
Units of surface tension are____________________?
Aenergy/unit area
Bdistance
Cboth of the above
Dit has no units E. none of the above
247
For manometer, a better liquid combination is one having ___________________?
Ahigher surface tension
Blower surface tension
Csurface tension is no criterion
Dhigh density and viscosity E. low density and viscosity
248
Mercury is often used in barometer because____________________?
Ait is the best liquid
Band
CE. it moves easily
Dboth
249
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea__________________?
AVenturimeter
BOrifice plate
Chot wire anemometer
Drotameter E. pitot tube
250
The speed of sound in a ideal gas varies directly as its__________________?
Apressure
Btemperature
Cdensity
Dmodulus of elasticity E. absolute temperature