In a steel plant the product of a blast furnace is
A.Cast steel
B.Mild steel
C.Pig iron
D.Cast iron
E.Ingot
Category: Mechanical Engineering Mcqs
In hot blast cupola
A.Temperature is high
B.Melting rate is high
C.Carbon percentage in castings is high
D.Air supplied is preheated
E.None of the above
Which is incorrect?
A.Compression ratio = initial volume + final volume
B.Final pressure = Initial pressure x compression ratio
C.Initial pressure = final pressure + compression ratio
D.Initial volume = compression ratio x final volume
E.None of the above
The moment of inertia of a hollow circular section whose external diameter is 8 cm and interial diameter is 6 cm about the axis passing through its centre is
A.33.4 cm4
B.66.8 cm4
C.137.5 cm4
D.275 cm4
E.550 cm4
For portable water the permissible pH value is
A.1 – 4.5
B.4.5 – 7
C.7 – 8.5
D.9 — 11
E.11 — 14
A block A is dropped down a smooth inclined plane, while another identical block B is released for free fall from the same height
A.both will hit the ground simultaneously
B.block A will have higher velocity than block B while hitting the ground
C.block A will hit the ground earlier
D.block B will hit the ground earlier.
Which of the following principle is used in the operation of Mc Leod gauge?
A.Charles law
B.Boyles law
C.Daltons law
D.Pascals law
E.None of the above
The excape velocity on the surface of the earth is
A.1 km/s
B.2.2 km/s
C.4.4 km/s
D.5.6 km/s
E.11.2 km/s
A hydraulic jump can occur under all of the following conditions EXCEPT
A.on the upstream side of the sluices
B.at the foot of the spillways
C.where the gradient suddenly chauges from a steep slope to a flat slope
D.when water moving in shooting flow impacts with water having a larger depth with streaming flow
In the polytropic process equation pvn Constant, if n = 0 the process is termed as
A.Constant volume
B.Constant pressure
C.Constant temperature
D.Adiabatic
E.Isothermal
