RSMSSB JE Degree Leel Mechanical SA 2016 Paper
Gases at low pressure behave as
(a) Ideal Gas
(b) Real Gas
(c) Ideal Liquid
(d) Real Liquid
Water is a/an
(a) Incompressible fluid
(b) Compressible fluid
(c) Gaseous fluid
(d) Solid fluid
Gauge pressure is
(a) The pressure difference between its value and absolute zero
(b) The pressure difference between its value and the local atmospheric pressure
(c) That is below the atmospheric pressure
(d) All of the above
Fluids for which the rate of deformation is proportional to Shear stress is called
(a) Newtonian fluid
(b) Hot fluid
(c) Cold Fluid
(d) Non Newtonian fluid
Pitot-tube is used for measuring
(a) Total Energy
(b) Pressure of flow
(c) Flow rate
(d) Velocity of flow
Reynolds number is given as
(a) Inertial forces x Viscous forces
(b) Viscous forces + Interial forces
(c) Inertial forces/ Viscous forces
(d) Viscous forces/Inertial forces
Coefficient of discharge of an orifice is
(a) Theoretical discharge/ Actual discharge
(b) Actual discharge x Theoretical discharge
(c) Actual discharge / Theoretical discharge
(d) Actual discharge + Theoretical discharge
Stream line is defined as
(a) An imaginary line in the flow, perpendicular to which is its direction of instantaneous velocity at that point
(b) An actual line in the flow, which is its direction of instantaneous velocity at that point
(c) An imaginary line in the flow, tangent to which is its direction of instantaneous velocity at that point
(d) None of the above
Cofficient of contraction is
(a) Area of the orifice x Area of jet at vena-contracta
(b) Area of jest at Vena-Contracta/ Area of the orifice
(c) Area of the orifice/Area of jet at vena contracta
(d) All of the above
Velocity is equal to
(a) 4 x angular velocity of a fluid particle
(b) 3 x angular velocity of a fluid particle
(c) angular velocity of a fluid particle
(d) 2 x angular velocity of a fluid particle
Impulse-momentum equation is based on
(a) Newton’s first law of motion
(b) Newton’s second law of motion
(c) Newton’s third law of motion
(d) All of the above
Spear is a part of
(a) Reaction Turbine
(b) Pelton Turbine
(c) Centrifugal Pump
(d) Reciprocating Pump
Which of the following turbines is suitable for specific speed ranging from 300 to 1000 and heads below 30 m ?
(a) Pelton Turbine
(b) Popeller Turbine
(c) Francis Turbine
(d) Keplan Turbine
Impeller is a part of
(a) Bucket pump
(b) Plunger pump
(c) Reciprocating pump
(d) Centrifugal pump
Reciprocating pump is
(a) Volute type pump
(b) Roto dynamic pump
(c) Diffusion type pump
(d) Positive displacement pump
The efficiency of a system using a wheel on which flat plates are mounted and a jet of liquid strikes will be maximum when
(a) The plate velocity = absolute velocity of water
(b) The plate velocity = absolute velocity of water/ 2
(c) The plate velocity = 2 x absolute velocity of water
(d) The plate velocity = 4 x absolute velocity of water
The maximum angle of diversion of water jet in a Pelton Turbine is
(a) 45 degree
(b) 90 degree
(c) 160 degree
(d) 180 degree
The maximum angle of draft tube is
(a) 15 degree
(b) 20 degree
(c) 5 degree
(d) 8 degree
Function of air vessel is to
(a) Store the water
(b) Reduce the acceleration head
(c) Increase the acceleration head
(d) To increase the head of a centrifugal pump
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