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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