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ME Set-1
Steam Nozzles and Turbines
11

Steam Nozzles and Turbines MCQ with Answers

11) The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be

0.4

0.56

0.67

1.67

Answer is:

0.4

Steam Nozzles and Turbines MCQ with Answers

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Related Steam Nozzles and Turbines MCQ with Answers

12) The impulse reaction turbine has its driving force

as an impulsive force

as a reaction force

partly as an impulsive force and partly as a reaction force

none of the above

Answer is:

partly as an impulsive force and partly as a reaction force

13) The efficiency of reaction turbine is maximum when (where ? = Angle made by the absolute velocity (V) at inlet)

V_b = 0.5 V cos ?

V_b = V cos ?

V_b = 0.5 V² cos ?

V_b = V² cos ?

Answer is:

V_b = V cos ?

14) A regenerative steam cycle renders

increased work output per unit mass of steam

decreased work output per unit mass of steam

increased thermal efficiency

decreased work output per unit mass of steam as well as increased thermal efficiency

Answer is:

decreased work output per unit mass of steam as well as increased thermal efficiency

15) De-Laval turbine is a

single rotor impulse turbine

multi-rotor impulse turbine

impulse reaction turbine

none of these

Answer is:

single rotor impulse turbine

Steam Nozzles and Turbines MCQ with Answers

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