A simple pitot tube is used to measure
A.The pressure in a static fluid
B.The velocity in a flowing stream
C.The total pressure
D.The dynamic pressure
E.The undistributed fluid pressure
Category: Mechanical Engineering Mcqs
The Carnot heat engine
A.receives energy at a high level of temperature
B.converts a portion of the energy received into work
C.discharges portion of the energy received to a heat sink at a low level of temperature
D.all of the above
Coated tools are good at
A.reducing machining cost
B.increasing surface finish on scoled surfaces
C.reducing diffusion wear
D.None of the above
Cold shortness is
A.Too much shrinkage of materials at low temperatures
B.Uneven shrinkage of materials at low temperatures
C.Brittleness of material at low temperature
D.The region where Hooke’s law does not hold good
E.None of the above
In solar ponds operating in a sunny climate salt (sodium chloride) is transported from noncenvective layer into upper convective layer at a rate of the order of
A.40 kg m-2 year-1
B.40 kg m-2 month-1
C.40 kg m-2 day-1
D.40 kg m-2 hour-1
If ash content of coke used in cupola is high then
A.melting rate will be low
B.more of flux will be required
C.castings produced will have blow holes
D.carbon content of castings will be low
Sweep patterns are used to prepare mould of
A.symmetrical and regular shapes
B.unsymmetrical and regular shapes
C.unsymmetrical and irregular shapes
D.none of the above
A cupola one metre in diameter and 4 metres in height will melt in one hour about
A.0.5 tonnes of iron
B.2 tonnes of iron
C.5 tonnes of iron
D.10 tonnes of iron
Which of the following materials have maximum magnetic permeability?
A.Pure iron
B.4% silicon steel
C.Gram oriented Si-Fe
D.Iron carbide
A bonus plan in which allowance is determined in terms of time for each unit of output instead of money is
A.hour-for-hour plan
B.group plan
C.Beedaux plan
D.none of the above
