⚙️Mechanical Engineering MCQs
Mechanical Engineering MCQs
488 MCQs171
Kinematic viscosity is equal to_________________?
Adynamic viscosity/density
Bdynamicviscosity x density
Cdensity/dynamic viscosity
D1/dynamicviscosity x density E. same as dynamic viscosity
172
The units of kinematic viscosity are____________________?
Ametres2 per sec
Bkg sec/metre
Cnewton-sec per metre
Dnewton-sec per metre E. none of the above
173
If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be________________?
Ah
Bwh
Cw/h
Dh/w E. h/wh
174
Kinematic viscosity is dependent upon__________________?
Apressure
Bdistance
Clevel
Dflow E. density
175
Increase in pressure at the outer edge of a drum of radius R due to rotation at corad/sec, full of liquid of density p will be___________________?
Apco2/?2
Bpco2/?2/2
C2pa2R2
Dpa2R/2 E. none of the above
176
If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following cm of water________________?
A51 cm
B50 cm
C52 cm
D52.2 cm E. 51.7 cm
177
Dimensions of surface tension are___________________?
AMlL°T2
BMlL°Tx
CMlL r2
DMlL2T2 E. MlL°t
178
Which of the following meters is not associated with viscosity____________________?
ARed wood
BSay bolt
CEngler
DOrsat E. none of the above
179
A large Roynold number is indication of________________?
Asmooth and streamline flow
Blaminar flow
Csteady flow
Dturbulent flow E. highly turbulent flow
180
Froude number is significant in__________________?
Asupersonics, as with projectile and jet propulsion
Bfull immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.
Csimultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls
Dall of the above E. none of the above