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A transformer rated at 10 kW is used to connect a 5 kV transmission line to a 240 V circuit. The ratio of turns in the windings of a transformer
Options
(a) 5
(b) 20.8
(c) 104
(d) 40
Correct Answer:
20.8
Explanation:
A 5 kV has to be connected to a 240 V circuit. This is a step down transformer. The ratio of primary [5000 V / 240 V] = n(ᴘ) / n(ѕ). Primary has 20.8 times the turns in the secondary.
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Topics: Electromagnetic Induction
(76)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- In a circuit, the current lags behind the voltage by a phase difference of π/2.
- A string is stretched between fixed points seperated by 75 cm. It is observed
- A metal plate weighing 750g is to be electroplated with 0.05% of its weight of silver.
- The number of beta particles emitted by a radioactive substance is twice the number
- A stone is dropped from a height h. It hits the ground with a certain momentum P. If the same stone is dropped from a height 100
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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