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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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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A car moving with a speed of 50 kmh⁻¹ can be stopped by brakes after at least 6 m
- The binding energy per nucleon in deuterium and helium nuclei are 1.1 MeV and 7.0 MeV
- Three capacitors each of capacitance C and of breakdown voltage V are joined in series
- Two waves of same amplitude superpose. The resultant intensity is I₁
- Monochromatic radiation emitted when electron on hydrogen atom
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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