Tag: #inductionmotor
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EK Electrical Dec 2024 (Q10)
Describe the construction and operation of EACH of the following: (a) Synchronous motor; (5) (b) Induction motor. (5) 10 marks Dec 2024, Dec 2022, Aug 2020 AC Motor Dec 2024 (Q10)
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EK Electrical Oct 2024 (Q10)
(a) Describe, with the aid of a sketch, the constructional details of a squirrel cage rotor as fitted in an induction motor. (7) (b) Explain why some rotors have a double cage. (3) 10 marks Oct 2024, Jul 2023, Mar 2021 Electric motors Oct 2024 (Q10)
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EK Electrical Dec 2023 (Q10)
With reference to braking of a.c. induction motors: (a) Explain why braking may be required (2) (b) Explain why electrical braking is preferable to mechanical braking (2) (c) Explain the term plugging (2) (d) Describe how dynamic braking is achieved (4) Dec 2023 (Q10)
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EK Electrical Jul 2020 (Q10)
With reference to star delta starters used for three phase induction motors: (a) Explain in detail why this type of starter is employed; (4) (b) Explain, with the aid of a circuit diagram, the sequence of operation of a star delta starter. (6) AC Starters Jul 2020 (Q10)
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EK Electrical Dec 2017 (Q10)
With reference to three phase induction motor starters (a) Explain why star-delta starters are employed (2) (b) Explain what is meant by reduced voltage starting in context with star-delta starting (2) (c) Explain, with the aid of power circuit, the sequence of star-delta. (6) AC Starters Dec 2017 (Q10)
UKM Tuticorin 