NEET Physics Transformer and LC Oscillations MCQs Set A

Refer to NEET Physics Transformer and LC Oscillations MCQs Set A provided below available for download in Pdf. The MCQ Questions for Full Syllabus Physics with answers are aligned as per the latest syllabus and exam pattern suggested by NEET, NCERT and KVS. Multiple Choice Questions for Transformer and LC Oscillations are an important part of exams for Full Syllabus Physics and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for NEET Full Syllabus Physics and also download more latest study material for all subjects

MCQ for Full Syllabus Physics Transformer and LC Oscillations

Full Syllabus Physics students should refer to the following multiple-choice questions with answers for Transformer and LC Oscillations in Full Syllabus.

Transformer and LC Oscillations MCQ Questions Full Syllabus Physics with Answers

Question:  A transformer is employed to
a) obtain a suitable A.C. voltage
b) obtain a suitable D.C. voltage
c) convert D.C. into A.C.
d) convert A.C. into D.C.
Answer: obtain a suitable A.C. voltage

Question: The transformer voltage induced in the secondary coil of a transformer is mainly due to
a) a varying magnetic field
b) a varying electric field
c) the vibrations of the primary coil
d) the iron core of the transformer
Answer: a varying magnetic field

Question: The loss of energy in the form of heat in the iron core of a transformer is
a) iron loss
b) mechanical loss
c) copper loss
d) None of these
Answer: iron loss

Question: Quantity that remains unchanged in a transformer is
a) frequency
b) voltage
c) None of these
d) current
Answer:  frequency

Question:

a) 1.1 × 103 rad s–1
b) 4.1 × 103 rad s–1
c) 2.1 × 103 rad s–1
d) None of these
Answer: 1.1 × 103 rad s–1

Question: A step up transformer operates on a 230 V line and supplies a current of 2 ampere. The ratio of primary and secondary winding is 1:25 . The current in primary is
a) 50 A
b) 15 A
c) 12.5 A
d) 25 A
Answer: 50 A

Question: In a transformers, number of turns in primary coil are 140 and that in secondary coil are 280. If current in primary coil is 4A, then that in secondary coil is
a) 2 A
b) 6 A
c) 10 A
d) 4 A
Answer: 2 A

Question:

a) 0.1 A
b) 2.2 A
c) 0.0001A
d) 2.1 A
Answer: 0.1 A

Question:  A transformer is used to light a 140 W, 24 V bulb from a 240 V a.c. mains. The current in the main cable is 0.7 A. The efficiency of the transformer is
a) 83.3 %
b) 16.7 %
c) 36.2 %
d) 63.8 %
Answer: 83.3 %

Question: Eddy currents in the core of transformer can't be developed by
a) taking laminated transformer
b) making step down transformer
c) using a weak a.c. at high potential
d) increasing the number of turns in secondary coil
Answer: taking laminated transformer

 

MCQs for Transformer and LC Oscillations Physics Full Syllabus

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