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Why are damper windings used in the construction of hydro- generators?
Answer: c Explanation: The damper windings are generally used in the construction of hydro-generators. It is generally used to reduce the oscillations in the generator.
Answer: c
See lessExplanation: The damper windings are generally used in the construction of hydro-generators. It is generally used to reduce the oscillations in the generator.
Why are damper windings used in the construction of hydro- generators?
Answer: c Explanation: The damper windings are generally used in the construction of hydro-generators. It is generally used to reduce the oscillations in the generator.
Answer: c
See lessExplanation: The damper windings are generally used in the construction of hydro-generators. It is generally used to reduce the oscillations in the generator.
The length of the mean turn of the winding is smallest with circular poles.
Answer: a Explanation: The circular poles have a lot of advantages. The length of the mean turn of the winding is smallest with circular poles and therefore cost is reduced. The copper losses are also less.
Answer: a
Explanation: The circular poles have a lot of advantages. The length of the mean turn of the winding is smallest with circular poles and therefore cost is reduced. The copper losses are also less.
See lessWhat is the range of the peripheral speeds in the water wheel generators?
Answer: a Explanation: The minimum peripheral speed in the water wheel generators is 20 m per sec. The maximum peripheral speed in the water wheel generators is 80 m per sec.
Answer: a
See lessExplanation: The minimum peripheral speed in the water wheel generators is 20 m per sec. The maximum peripheral speed in the water wheel generators is 80 m per sec.
For what peripheral speed is the poles bolted to the yoke?
Answer: c Explanation: The poles are clamped or fixed to the rim in different ways. In case of the generators the poles are bolted to the yoke when the peripheral speed is upto 25 m per s.
Answer: c
Explanation: The poles are clamped or fixed to the rim in different ways. In case of the generators the poles are bolted to the yoke when the peripheral speed is upto 25 m per s.
See lessFor what peripheral speed of the machine is the segmental rim on fabricated spider used?
Answer: d Explanation: The segmental rim on fabricated spider is used for the machines whose peripheral speed is upto 130 m per s. The advantage is it is easy to transport and assemble at site.
Answer: d
Explanation: The segmental rim on fabricated spider is used for the machines whose peripheral speed is upto 130 m per s. The advantage is it is easy to transport and assemble at site.
See lessThe laminations used in the rotor body design is 1.8 mm.
Answer: a Explanation: The laminations used in the rotor body design is 1.8 mm. They are in the form of the overlapping segments tightly bolted.
Answer: a
See lessExplanation: The laminations used in the rotor body design is 1.8 mm. They are in the
form of the overlapping segments tightly bolted.
What is the range of the length of the thick rolled sheets used in the rotor design of the hydro generators?
Answer: b Explanation: The minimum value of the length of the thick rolled sheets used in the rotor design of the hydro-generators is 120 mm. The maximum value of the length of the thick rolled sheets used in the rotor design of the hydro-generators is 180 mm.
Answer: b
Explanation: The minimum value of the length of the thick rolled sheets used in the rotor design of the hydro-generators is 120 mm. The maximum value of the length of the thick rolled sheets used in the rotor design of the hydro-generators is 180 mm.
See lessIn what type of generator is the thick rolled steel discs made use of?
Answer: d Explanation: Another type of rotor construction made use of in the hydro-generators is the thick rolled steel discs. It is made use for the generators running at 600 rpm and above.
Answer: d
See lessExplanation: Another type of rotor construction made use of in the hydro-generators is the thick rolled steel discs. It is made use for the generators running at 600 rpm and
above.
Which machine makes use of the forged steel construction?
Answer: b Explanation: The forged steel construction is made use for the high speed machines. The earliest construction particularly at relatively low outputs consisted of a body and shaft extension made as single forging.
Answer: b
Explanation: The forged steel construction is made use for the high speed machines. The earliest construction particularly at relatively low outputs consisted of a body and shaft extension made as single forging.
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