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This set of Fluid Mechanics and Machinery Multiple Choice Questions & Answers (MCQs) focuses on Fluid Mechanics And Machinery Set 13
Q1 | Centrifugal pumps are a sub class of dynamic axisymmetric work absorbing turbomachinery.
- true
- false
Q2 | Turbines and compressors work with the gas, while centrifugal pump transfers energy.
- true
- false
Q3 | Centrifugal pumps transport fluids by converting
- kinetic energy to hydrodynamic energy
- hydrodynamic energy to kinetic energy
- mechanical energy to kinetic energy
- mechanical energy to hydrodynamic energy
Q4 | With the increase in load, Energy in the turbine
- decreases
- increases
- remains same
- independent
Q5 | The rotational kinetic energy comes from
- engine motor
- pump
- tank
- draft tube
Q6 | When the balancing of the turbine is disturbed, we use
- throttle governing
- steam governing
- nozzle governing
- emergency governing
Q7 | The fluid coming into the centrifugal pump is accelerated by
- throttle
- impeller
- nozzle
- governor
Q8 | Reciprocating pump is a
- negative displacement pump
- positive displacement pump
- diaphragm pump
- emulsion pump
Q9 | What happens to the reciprocating pump when left untouched?
- efficiency decreases
- wear and tear
- surface expansion
- pressure change
Q10 | The cylinder of reciprocating cylinder is made up of
- cast iron
- wrought iron
- aluminium
- copper
Q11 | The higher discharge valve line holds the discharge valve
- open
- closed
- stop functioning
- automatic
Q12 | Reciprocating pumps are also called as
- force pumps
- mass pumps
- heat pumps
- speed pumps
Q13 | Reciprocating pumps are classified according to
- drag force
- number of cylinders
- shock waves
- flow speed
Q14 | Simple hand operating pump is also called as
- froth pump
- bicycle pump
- multistage pumps
- centrifugal pumps
Q15 | Internal cavitation in reciprocating pumps occurs due to
- drag force
- cyclic stress
- shock waves
- flow speed
Q16 | Bicycle pump generates more compression than volume displacement.
- true
- false
Q17 | Power operated pump in which only one side engages the fluid displacement is called
- froth pump
- single acting
- double acting
- bicycle pump
Q18 | Operation of reciprocating motion is done by a source
- power
- energy
- momentum
- inertia
Q19 | High pressure reciprocating pumps are generally from 1500 HP.
- true
- false
Q20 | Which of the following centrifugal pumps has higher specific speed than the others?
- axial flow
- radial flow
- mixed flow
- all centrifugal pumps have same specific speed
Q21 | Pump transfers the mechanical energy of a motor or of an engine into of a fluid.
- pressure energy
- kinetic energy
- either pressure energy or kinetic energy
- pressure energy, kinetic energy or both
Q22 | Which of the following is NOT a type of positive displacement pumps?
- reciprocating pump
- rotary displacement pump
- centrifugal pump
- none of the mentioned
Q23 | Rotary displacement pumps are suitable for handling
- oils
- gritty liquids
- both oils as well as gritty liquids
- granules
Q24 | Which of the following is/are not example/s of rotary displacement pumps?
- gear pump
- vane pump
- rotary piston pump
- centrifugal pump
Q25 | pump is also called as velocity pump.
- reciprocating
- rotary displacement
- centrifugal
- screw