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What is the thickness of the most commonly used grade for stator laminations?
Answer: a Explanation: The most commonly used grade for the stator laminations is grade 230. The thickness of this most commonly used grade for the stator laminations is 0.5 mm.
Answer: a
Explanation: The most commonly used grade for the stator laminations is grade 230. The thickness of this most commonly used grade for the stator laminations is 0.5 mm.
See lessThe modern synchronous machines make use of non-directional cold rolled steel.
Answer: a Explanation: The modern synchronous machines make use of the non-directional cold rolled steel which has electrical characteristics similar to that of the hot rolled steel. But the non-directional cold rolled steel has much improved mechanical characteristics.
Answer: a
Explanation: The modern synchronous machines make use of the non-directional cold rolled steel which has electrical characteristics similar to that of the hot rolled steel. But the non-directional cold rolled steel has much improved mechanical characteristics.
See lessWhy is the stator core built up of laminations?
Answer: d Explanation: The stator core is built up of laminations in order to reduce the eddy current loss. The loss in the laminated core is usually the single largest loss and hence the choice of type and grade of steel is of utmost importance.
Answer: d
Explanation: The stator core is built up of laminations in order to reduce the eddy current loss. The loss in the laminated core is usually the single largest loss and hence the choice of type and grade of steel is of utmost importance.
See lessWhat factors does the speed of the machines depend upon?
Answer: d Explanation: The hydro-generators are generally low speed machines. The speed depends upon the head and the type of turbines used.
Answer: d
See lessExplanation: The hydro-generators are generally low speed machines. The speed
depends upon the head and the type of turbines used.
Which factor does the constructional feature of the hydro- generators depend on?
Answer: a Explanation: The constructional feature of hydro-generators are basically dependent upon the mechanical considerations. The main mechanical consideration is speed of the machine.
Answer: a
Explanation: The constructional feature of hydro-generators are basically dependent upon the mechanical considerations. The main mechanical consideration is speed of the machine.
See lessHow many factors are involved in the construction of hydro-generators?
Answer: b Explanation: The hydro-generators are the synchronous generators that are driven by the water turbines. They are chosen based on 10 different categories.
Answer: b
Explanation: The hydro-generators are the synchronous generators that are driven by the water turbines. They are chosen based on 10 different categories.
See lessWhat is the rating of the synchronous generators?
Answer: c Explanation: The main application of the synchronous compensators is to control the reactive powers. They are designed for ratings upto 100 MVAr.
Answer: c
See lessExplanation: The main application of the synchronous compensators is to control the
reactive powers. They are designed for ratings upto 100 MVAr.
What is the application of synchronous compensators?
Answer: c Explanation: The main application of the synchronous compensators is to control the reactive powers. They are used in the power supply networks.
Answer: c
Explanation: The main application of the synchronous compensators is to control the reactive powers. They are used in the power supply networks.
See lessWhich among the following are the applications of synchronous motors?
Answer: d Explanation: They are mainly used in the high power and low speed applications. They include compressors, fans, blowers and low head pumps.
Answer: d
See lessExplanation: They are mainly used in the high power and low speed applications. They include compressors, fans, blowers and low head pumps.
The synchronous motors are cheaper than the induction motors.
Answer: a Explanation: The synchronous motors are cheaper than the induction motors. They have high power lower speed applications and are cheaper when compared to the induction motors.
Answer: a
See lessExplanation: The synchronous motors are cheaper than the induction motors. They have high power lower speed applications and are cheaper when compared to the induction motors.