Hydraulic jump is used for
A.Increasing the flow rate
B.Reducing the flow rate
C.Reducing the velocity of flow
D.Reducing the energy of flow
E.Reducing turbulence
Category: Mechanical Engineering Mcqs
Which one of the following is not the law of dry friction?
A.If friction is neglected, the reactions are always normal to the surfaces on contact
B.Friction always acts to oppose the relative motion of the free body
C.If static friction is acting, the value of the friction force may vary from zero to its maximum value
D.The force of friction is always normal to the surface
E.All of the above
The decibel is
A.Unit of noise level
B.A logarithmic ratio between a measured quantity and a reference quantity
C.Quantity of noise per unit area
D.A logarithmic ratio between a measured quantity and 100
E.None of the above
The linear velocity of a point on a link relative to any other point on the link will be
A.Along the line joining the two points
B.Perpendicular to the line joining the two points
C.Same as that of the end points of link
D.Perpendicular to the lower end of the link
E.None of the above
Hydrogen cannot be liquefied at room temperature by the application of pressure, because
A.It has low density
B.It has high viscosity
C.Its thermal conductivity is high
D.It is a diatomic molecule
E.Its critical temperature is lower than the normal room temperature
Which of these training techniques would most likely be evaluated by participant reaction?
A.Sensitivity training
B.On the job
C.Apprenticeship
D.Programmed instructions
E.Demonstration and example
A mercury water manometer indicates a gauge difference of 400 mm. The difference in pressure, measured in metres of water, is
A.0.4
B.0.8
C.1088
D.5.44
E.None of the above
A gas turbine plant operates between 1 ata and 9 ata with minimum and maximum cycle temperature of 25?C and 1000?C. A two stage compressor is provided with perfect intercooling and work is equally divided between the two stages. The intermediate pressure will be
A.3 ata
B.4 ata
C.5 ata
D.5.5 ata
E.7.5 ata
A stone weighing 20 N is whirling in a vertical circle at the extremity of a string 100 cm long. The tension in the string will be zero
A.at the highest position
B.at the lowest position
C.at the midway position
D.at none of the above
With electronic circuits the accuracy that can be expected from scanners will lie in the range of
A.0.1 to 1%
B.5 to 10%
C.10 to 17.5%
D.20 to 25%
E.25 to 50%
