RRB NTPC/ASM/CA/TA Exam > RRB NTPC/ASM/CA/TA Questions > A transformer has a 200-turn primary winding....
Start Learning for Free
A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?
- a)84 Hz
- b)78 Hz
- c)54 Hz
- d)91 Hz
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
A transformer has a 200-turn primary winding. If a voltage of 240 V is...
Given:
E1 = 240 V
N1 = 200
ϕm = 5 mWb
In a transformer, an alternating current is applied to the primary winding, a current in the primary winding (magnetizing current) produces alternating flux in the core of the transformer. This alternating flux gets linked with the secondary winding, by mutual induction, so an emf gets induced in the secondary winding. This induced emf is given by the EMF equation of the transformer.
E1 = 4.44f N1 ϕm ……….(1)
E2 = 4.44f N2 ϕm ……….(2)
Where, N1 = Number of turns in primary winding (high voltage side)
N2 = Number of turns in secondary winding (low voltage side)
ϕm = Maximum flux in the core (Wb)
Φm = Bm × A
Bm = Maximum flux density (T)
A = Area of core (m2)
f = Frequency of the AC supply (Hz)
E1 = Induced emf on the primary side (high voltage side) (V)
E2 = Induced emf on the secondary side (low voltage side) (V)
From equation (1) supplied frequency (f) of the transformer can be calculated as,
240 = 4.44 × f × 200 × 5 × 10-3
⇒ 240 = 4.44 × f
⇒ f = 54.05 Hz
E1 = 240 V
N1 = 200
ϕm = 5 mWb
In a transformer, an alternating current is applied to the primary winding, a current in the primary winding (magnetizing current) produces alternating flux in the core of the transformer. This alternating flux gets linked with the secondary winding, by mutual induction, so an emf gets induced in the secondary winding. This induced emf is given by the EMF equation of the transformer.
E1 = 4.44f N1 ϕm ……….(1)
E2 = 4.44f N2 ϕm ……….(2)
Where, N1 = Number of turns in primary winding (high voltage side)
N2 = Number of turns in secondary winding (low voltage side)
ϕm = Maximum flux in the core (Wb)
Φm = Bm × A
Bm = Maximum flux density (T)
A = Area of core (m2)
f = Frequency of the AC supply (Hz)
E1 = Induced emf on the primary side (high voltage side) (V)
E2 = Induced emf on the secondary side (low voltage side) (V)
From equation (1) supplied frequency (f) of the transformer can be calculated as,
240 = 4.44 × f × 200 × 5 × 10-3
⇒ 240 = 4.44 × f
⇒ f = 54.05 Hz
Attention RRB NTPC/ASM/CA/TA Students!
To make sure you are not studying endlessly, EduRev has designed RRB NTPC/ASM/CA/TA study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in RRB NTPC/ASM/CA/TA.
|
Explore Courses for RRB NTPC/ASM/CA/TA exam
|
|
Similar RRB NTPC/ASM/CA/TA Doubts
Top Courses for RRB NTPC/ASM/CA/TAView all
A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?a)84 Hzb)78 Hzc)54 Hzd)91 HzCorrect answer is option 'C'. Can you explain this answer?
Question Description
A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?a)84 Hzb)78 Hzc)54 Hzd)91 HzCorrect answer is option 'C'. Can you explain this answer? for RRB NTPC/ASM/CA/TA 2024 is part of RRB NTPC/ASM/CA/TA preparation. The Question and answers have been prepared according to the RRB NTPC/ASM/CA/TA exam syllabus. Information about A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?a)84 Hzb)78 Hzc)54 Hzd)91 HzCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for RRB NTPC/ASM/CA/TA 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?a)84 Hzb)78 Hzc)54 Hzd)91 HzCorrect answer is option 'C'. Can you explain this answer?.
A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?a)84 Hzb)78 Hzc)54 Hzd)91 HzCorrect answer is option 'C'. Can you explain this answer? for RRB NTPC/ASM/CA/TA 2024 is part of RRB NTPC/ASM/CA/TA preparation. The Question and answers have been prepared according to the RRB NTPC/ASM/CA/TA exam syllabus. Information about A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?a)84 Hzb)78 Hzc)54 Hzd)91 HzCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for RRB NTPC/ASM/CA/TA 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?a)84 Hzb)78 Hzc)54 Hzd)91 HzCorrect answer is option 'C'. Can you explain this answer?.
Solutions for A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?a)84 Hzb)78 Hzc)54 Hzd)91 HzCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for RRB NTPC/ASM/CA/TA.
Download more important topics, notes, lectures and mock test series for RRB NTPC/ASM/CA/TA Exam by signing up for free.
Here you can find the meaning of A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?a)84 Hzb)78 Hzc)54 Hzd)91 HzCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?a)84 Hzb)78 Hzc)54 Hzd)91 HzCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?a)84 Hzb)78 Hzc)54 Hzd)91 HzCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?a)84 Hzb)78 Hzc)54 Hzd)91 HzCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A transformer has a 200-turn primary winding. If a voltage of 240 V is supplied to the winding and the maximum flux is 5 mWb, then what will be the frequency of the given voltage?a)84 Hzb)78 Hzc)54 Hzd)91 HzCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice RRB NTPC/ASM/CA/TA tests.
|
|
Explore Courses for RRB NTPC/ASM/CA/TA exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup