Fluid Mechanics And Machinery Set 8

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This set of Fluid Mechanics and Machinery Multiple Choice Questions & Answers (MCQs) focuses on Fluid Mechanics And Machinery Set 8

Q1 | The flow rate of steam is controlled by regulating the  
  • steam
  • pressure
  • temperature
  • speed
Q2 | What is primary objective of steam turbine governing?
  • maintain constant speed
  • maintain constant pressure
  • maintain constant temperature
  • maintain constant expansion
Q3 | governing?
  • controls speed
  • controls flow rate
  • controls volume
  • controls discharge
Q4 | Which among the following control the flow rate?
  • valve
  • pump
  • head
  • tank pipe
Q5 | The advantage of nozzle governing is that no regulating pressure is applied.
  • true
  • false
Q6 | During the steam turbine governing, what remains a constant?
  • speed of rotation
  • flow rate
  • pump head
  • volume of fluid
Q7 | When do we apply by pass governing?
  • when turbine is overloaded
  • when unit speed decreases
  • when unit power increases
  • when unit pressure decreases
Q8 | When bypass valve is opened to  
  • increase pressure
  • increase unit speed
  • increase unit power
  • increase the amount of fresh steam
Q9 | What is the unit of steam rate?
  • kg
  • kg/m
  • kg/kwh
  • n/m
Q10 | turbine  
  • decreases
  • increases
  • remains same
  • independent
Q11 | Combination governing involves usage of two or more governing.
  • true
  • false
Q12 | increases beyond 110 percent, we use
  • throttle governing
  • steam governing
  • nozzle governing
  • emergency governing
Q13 | Which one of the following is the unit of mass density?
  • kg = m3
  • kg = m2
  • kg = m
  • kg = ms
Q14 | The specific gravity of a liquid has
  • the same unit as that of mass density
  • the same unit as that of weight density
  • the same unit as that of specific volume
  • no unit
Q15 | The specific volume of a liquid is the reciprocal of
  • weight density
  • mass density
  • specific weight
  • specific volume
Q16 | Which one of the following is the unit of specific weight?
  • n = m3
  • n = m2
  • n = m
  • n = ms
Q17 | Which one of the following is the dimension of mass density?
  • [m1 l-3 t0].
  • [m1 l3 t0].
  • [m0 l-3 t0].
  • [m0 l3 t0].
Q18 | ] = [ML-3].
  • [m1 l-3 t0].
  • [m1 l0 t0].
  • [m0 l-3 t0].
  • [m0 l0 t0].
Q19 | ]/[M] = [M-1L3].
  • [ml-3 t -2].
  • [ml3 t-2].
  • [ml-2 t-2].
  • [ml2 t-2].
Q20 | and v2?
  • v1 > v2
  • v1 < v2
  • v1 = v2
  • cannot be determined due to insufficient information.
Q21 | A beaker is filled with a liquid up to the mark of one litre and weighed. The weight of the liquid is found to be 6.5 N. The specific weight of the liquid will be
  • 6:5 kn = m3
  • 6:6 kn = m3
  • 6:7 kn = m3
  • 6:8 kn = m3
Q22 | A beaker is filled with a liquid up to the mark of one litre and weighed. The weight of the liquid is found to be 6.5 N. The specific gravity of the liquid will be
  • 0.65
  • 0.66
  • 0.67
  • 0.68
Q23 | A beaker is filled with a liquid up to the mark of one litre and weighed. The weight of the liquid is found to be 6.5 N. The specific volume of the liquid will be
  • 1 l =kg
  • 1:5 l =kg
  • 2 l =kg
  • 2:5 l =kg
Q24 | The physical principle behind the continuity equation is                      
  • mass conservation
  • zeroth law of thermodynamics
  • first law of thermodynamics
  • energy conservation
Q25 | To convert the non-conservative integral equation of mass conservation into the conservative integral form, which of these theorems is used?
  • stokes theorem
  • kelvin-stokes theorem
  • gauss-siedel theorem
  • gauss divergence theorem