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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) N_{1}Ð¤_{1}I_{1}

(b) **N**_{2}Ð¤_{1}/I_{1}

(c) N_{2}Ð¤_{2}/I_{1}

4. Coefficient of self induction ‘L is equal to

(a) **NÐ¤/L**

(b) MÐ¤/L

(c) NÐ¤/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 dÐ¤/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 = __N___{2}Ð¤_{1}/T_{1}.

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. Î¼H is greater then pH. **T**

5. Dynamically induced emf is divided into self and mutual induced emf. **F**
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