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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
- A point charge q is situated at a distance r on axis from one end of a thin
- In a discharge tube ionization of enclosed gas is produced due to collisions between
- A small rod of bismuth is suspended freely between the poles of a strong electromagnet.
- A coil has resistance 30 ohm and inductive reactance 20 ohmn at 50 Hz frequency.
- In the series resonance the value of impedence is 3 Ω and the resistance is 4Ω,
Topics: Electromagnetic Induction (76)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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