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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
- Photons of 5.5 eV energy fall on the surface of the metal emitting photoelectrons
- An electric motor runs on DC source of emf 200 V and draws a current of 10 A.
- In depletion layer of unbiased P-N junction
- Three objects coloured black, gray and white can withstand hostile conditions upto 2800⁰C.
- To get three images of single object, one should have two plane mirrors at an angle of
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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