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Tuesday, 8 September 2015

Electromagnetic Induction - Multiple Choice Questions, Blanks & True False

Electromagnetic Induction - Multiple Choice Questions, Blanks & True False Points : Electromagnetic Induction, multiple choice questions and answer,Electromagnetic Induction - fill in the blanks,Electromagnetic Induction - true or false, Electromagnetic Induction mcqs, objective type questions principles of electrical engineering Multiple Choice Questions 1. According to Faraday’s law of electromagnetic induction emf is induced in a conductor whenever it
(a) Lies in magnetic field
(b) Cuts the magnetic flux
(c) None of them

2. Lenz’s law formulated in
(a) 1835
(b) 1867
(c) 1735

3. Coefficient of mutual induction ‘M’ is equal to
(a) N1Ф1I1
(b) N2Ф1/I1
(c) N2Ф2/I1

4. Coefficient of self induction ‘L is equal to
(a) NФ/L
(b) MФ/L
(c) NФ/M

5. The direction of induced current in case of dynamically induced emf can be find by
(a) Lenz’s law
(b) Fleming’s rule
(c) None of them
Fill in the blanks 1. Electromagnetic Induction laws was put forwarded by faraday’s.
2. According to Faraday’s second law, e = -N dФ/dt volt.
3. Lenz’s law was, formulated in the year 1835.
4. Induced emf can be either dynamically induced or statically induced.
5. The weber turns per ampere in the coil is called coefficient of self induction.
6. The unit of self inductance is henry.
7. Coefficient of mutual induction denoted by M.
8. According to coefficient of mutual induction, M = N2Ф1/T1.
9. Fleming’s rule is used where induced emf is due to flux cutting.
True and False 1. The unit of inductive reactane is Henry. F
2. Coefficient of mutual induction is denoted by ‘m’. F
3. Coefficient of self induction is denoted by ‘L’. T
4. μH is greater then pH. T
5. Dynamically induced emf is divided into self and mutual induced emf. F

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