Power System - I (3140914) MCQs

MCQs of Conventional Generation, Load Curves and Tariffs

Showing 41 to 50 out of 425 Questions
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41.
An impulse turbine
(a) Is most suited for low head and high discharge power plants
(b) Operates by initial complete conversion of kinetic energy
(c) Makes use of s draft tube
(d) Always operates submerged
Answer:

Option (b)

42.
An adjustable blade propeller turbine is called a
(a) Pelton turbine
(b) Kaplan turbine
(c) Francis turbine
(d) High head turbine
Answer:

Option (b)

43.
Turbines installed at Bhakra Nangal are
(a) Pelton turbine
(b) Francis turbine
(c) Kaplan turbine
(d) High head turbine
Answer:

Option (a)

44.
In water turbines, the runaway speed of Pelton wheel is
(a) 1.8 times rated speed
(b) 2to 2.2 times rated speed
(c) 2.5 to 3 times rated speed
(d) Full load speed
Answer:

Option (a)

45.
The number of buckets (Z) for a Pelton wheel in terms of jet ratio (m) is given by empirical relation
(a) Z = 15 m + 0.5
(b) Z = 0.5 m + 15
(c) Z = 2 m + 15
(d) Z = 15 m + 2
Answer:

Option (b)

46.
In reaction turbine, the function of draft tube is to
(a) Reduce water hammer
(b) Increase flow rate of water
(c) Convert kinetic energy of water to potential energy by a gradual expansion in divergent part
(d) None of above
Answer:

Option (c)

47.
In Francis turbine runner, the number of blades is usually of the order of
(a) 16 - 24
(b) 8 - 10
(c) 6 - 8
(d) 3 - 6
Answer:

Option (a)

48.
The maximum head of a Kaplan turbine is limited to
(a) 25 m
(b) 70 m
(c) 125 m
(d) 100 m
Answer:

Option (a)

49.
In pumped storage power plants
(a) Water is recirculated through water turbines
(b) Reversible turbines are used which operate as turbine for power generation during peak load hours and as pump for pumping water during peak-off hours
(c) Plain Francis turbines are used
(d) Both (a) and (c)
Answer:

Option (b)

50.
In India, pumped storage power plant
(a) Does not exist at all
(b) Exists in Rajasthan alone
(c) Exists in Kadampurai (TN)
(d) Exists in Haryana
Answer:

Option (c)

Showing 41 to 50 out of 425 Questions
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