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This set of Fluid Mechanics and Machinery Multiple Choice Questions & Answers (MCQs) focuses on Fluid Mechanics And Machinery Set 4
Q1 | Which among the following is a standard scale for a similitude?
- 1:250
- 1:50
- 1:25
- 1:100
Q2 | In similitude, Fapplication=Fmodel*3.44
- true
- false
Q3 | spread is called
- surface tension
- diffusivity
- viscosity
- kinetics
Q4 | Which among the following is the standard symbol for Archimedes number?
- a
- ar
- a
Q5 | symbol for Atwood number?
- ar
- ar
- a
Q6 | Which among the following is the standard symbol for Blake number?
- bi
- ba
- bl
- b
Q7 | Which among the following is the standard symbol for Darcy friction factor?
- f
- fd
- c
- cd
Q8 | Fanning friction factor is
- 0.25 times darcy friction factor
- same as darcy friction factor
- 2 times darcy friction factor
- independent
Q9 | symbol for Froude number?
- f
- fo
- fr
- f
Q10 | Which among the following is the formula for Knudsen number?
- λ⁄l
- λ⁄2l
- λ⁄3l
- λ⁄4l
Q11 | utilization of
- accelerating mass
- volume
- work
- velocity
Q12 | fluid mechanics deals with heat transfer. It is
- backward direction
- forward direction
- perpendicular direction
- parallel movement
Q13 | The force analysis on a curved vane is understood using
- velocity triangles
- angle of the plate
- vane angles
- plate dimensions
Q14 | Jet propulsion works on the principle of
- newton’s first law
- newton’s second law
- newton’s third law
- thermodynamic properties
Q15 | How is absolute velocity at inlet denoted?
- v
- v1
- c
- v
Q16 | The relative velocity is obtained by the equation
- u – v1
- v1
- u*v1
- u/v1
Q17 | If the friction is neglected, then
- vr1 > vr2
- vr1 < vr2
- vr1 = vr2
- vr1 is a zero
Q18 | If the pressure remains a constant, then
- vr1 > vr2
- vr1 < vr2
- vr1 = vr2
- vr1 is a zero
Q19 | from the sea can be taken by the pump.
- true
- false
Q20 | Jet propulsion of ship is less efficient than screw propeller due to
- pressure
- temperature
- frictional losses
- wear and tear
Q21 | A jet strikes a curved plate at its
- sides
- surface
- centre
- does not strike
Q22 | of jet engine?
- turbojet
- ramjet
- scramjet
- propulsive jet
Q23 | decelerates the flow, what increases?
- pressure
- temperature
- volume
- flow rate
Q24 | while passing
- pressure energy
- kinetic energy
- momentum
- potential energy
Q25 | The consequence of Newtons second law is
- conservation of angular momentum
- conservation of mass
- conservation of potential energy
- conservation of kinetic energy