⚙️Mechanical Engineering MCQs
Mechanical Engineering MCQs
488 MCQs131
Constantant an alloy used in thermocouples is an alloy of __________________?
Acopper and tin
Bcopper and zinc
Ccopper and iron
Dcopper and nickel E. copper and chromium
132
German silver contains_________________?
A1% silver
B2.5% silver
C5% silver
D10% silver E. 100% silver
133
Manometer is used to measure__________________?
Apressure in pipes, channels etc
Batmospheric pressure
Cvery low pressure
Ddifference of pressure between two points E. velocity
134
A metal with specific gravity of o floating in a fluid of same specific gravity a will____________________?
Asink to bottom
Bfloat over fluid
Cpartly immersed
Dbe fully immersed with top surface at fluid surface E. none of the above
135
Dynamic viscosity of most of the liquids with rise in temperature__________________?
Aremains unaffected
Bdecreases
Dunpredictable E. none of the above
136
Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem_________________?
AVenturimeter
BOrifice plate
Cnozzle
Dpitot tube E. all of the above
137
Which of the following instrument can be used for measuring speed of an aeroplane___________________?
AVenturimeter
BOrifice plate
Chot wire anemometer
Drotameter E. pitot tube
138
In an isothermal atmosphere, the pressure___________________?
Adecreases linearly with elevation
Bremains constant
Cvaries in the same way as the density
Dincreases exponentially with elevation E. unpredictable
139
Operation of McLeod gauge used for low pressure measurement is based on the principle of_________________?
Agas law
BBoyle’s law
CCharle’s law
DPascal’s law E. McLeod’s law
140
The atmospheric pressure with rise in altitude decreases__________________?
Alinearly
Bfirst slowly and then steeply
Cfirst steeply and then gradually
Dunpredictable E. none of the above