⚙️Mechanical Engineering MCQs
Mechanical Engineering MCQs
488 MCQs261
The vapour pressure over the concave surface is______________________?
Aless man the vapour pressure over the plane surface
Bequal to the vapour pressure over the plane surface
Cgreater than the vapour pressure over the plane surface
Dzero E. none of the above
262
The process of diffusion of one liquid into the other through a semi-permeable membrane is called_______________________?
Aviscosity
Bosmosis
Csurface tension
Dcohesion E. diffusivity
263
The continuity equation is connected with__________________?
Aviscous/unviscous fluids
Bcompressibility of fluids
Cconservation of mass
Dsteady/unsteady flow E. open channel/pipe flow
264
Newton’s law of viscosity is a relationship between____________________?
Ashear stress anctthejiate of angular distortion
Bshear stress and viscosity
Cshear stress, velocity and viscosity
Dpressure, velocity and viscosity E. shear stress, pressure and rate of angular distortion
265
Pressure of the order of 10″‘ torr can be measured by__________________?
ABourdon tube
BPirani Gauge
Cmicro-manometer
Dionisastion gauge E. McLeod gauge
266
An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of__________________?
A1
B1.2
C0.8
D0.75 E. 1.25
267
The equivalent evaporation of a boiler is a measure to compare _________________?
Athe given boiler with the model
Bthe two different boilers of the same make
Ctwo different makes of boilers operat¬ing under the same operating conditions
Dtwo boilers of same make but operaing under different conditions E. any type of boilers operating under any conditions
268
Equivalent evaporation is the amount of water evaporated in a boiler from and at ____________________?
A0°C
B100°C
Csaturation temperature at given pressure
Droom temperature E. 20°C
269
1 kg.m is equal to_________________?
A9.81 Joules
BAll Joules
C427 Joules
D102 Joules E. 539 Joules
270
The ratio of absolute viscosity to mass density is known as_________________?
Aspecific viscosity
Bviscosity index
Ckinematic viscosity
Dcoefficient of viscosity E. coefficient of compressibility