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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
- The thermo e.m.f. E in volts of a certain thermocouple is found to vary
- A electric dipole is placed at an angle of 30⁰ to a non-uniform electric field.
- A string is stretched between fixed points seperated by 75 cm. It is observed
- A body is under stress F and has Young’s modulus Y, then the energy
- In a semiconductor
Topics: Alternating Current (96)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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