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The primary and secondary coil of the transformer have 50 and 1500 turns respectively. If the magnetic flux ? linked with the primary coil is given by ? = ?￢ﾂﾀ + 4t, where ? is in webers, t is time in seconds and ?￢ﾂﾀ is the constant, the output voltage across the secondary coil is
Options
(a) 120 volts
(b) 220 volts
(c) 30 volts
(d) 90 volts
Correct Answer:
120 volts
Explanation:
Vₛ / Vₚ = Nₛ / Nₚ where
Nₛ = No. of turns across primary coil = 50
Nₚ = No. of turns across secondary coil = 1500
and Vₚ = d? / dt = d/ dt( ?￢ﾂﾀ + 4t) = 4
⇒ Vₛ = 1500 / 50 x 4 = 120 V
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Topics: Alternating Current
(96)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Number of spectral lines in hydrogen atom is
- The displacement of particle is given by x=aₒ+(a₁t/2)-(a₂t²/3) what is acceleration?
- Three identical spheres, each of mass 3 kg are placed touching each other
- A battery of e.m.f. E and internal resistance r is connected to an external resistance
- A certain current on passing through a galvanometer produces a deflection
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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