Tag: #mechanicalstress
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EK Electrical Dec 2024 (Q11)
(a) Sketch a wiring diagram of a shore connection for the supply of electrical power to a vessel, showing the phase sequence indicator. (4) (b) Explain the consequences of connecting an electrical shore supply in EACH of the following cases: (i) In the wrong phase sequence; (2) (ii) At a higher voltage; (2) (iii) At…
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EK Electrical Dec 2021 (Q10)
With reference to AC induction motors (a) State, with reasons, the type of fuse used for protection (2) (b) Explain the effects of single phasing (3) (c) Describe how thermistors can be used to protect the motor (3) (d) State TWO types of relay that provide electrical overload protection (2) Dec 2021 (Q10)
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EK Electrical Dec 2019 (Q9)
With reference to the protective devices fitted to a main alternating current generator, explain EACH of the following (a) Overcurrent and short circuit protection (2) (b) Generator negative phases sequence (2) (c) Loss of field (Excitation) (2) (d) Under voltage (2) (e) Reverse power (2) Generator & circuit protection Dec 2019 (Q9)
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EK Electrical Mar 2018 (Q10)
Describe, with the aid of a sketch, an electronic soft starting system that may be used for large AC induction motors (10) AC Starters Mar 2018 (Q10)
UKM Tuticorin 