| 1 |
If a step up transformer were 100% efficient the primary and secondary winging's would have the same. |
- A. Current
- B. Power
- C. Voltage
- D. Direction of winding
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| 2 |
The Lenz's law is also statement of: |
- A. Law of conservation of mass
- B. Law of conservation of charge
- C. Law of conservation of energy
- D. Law of conservation of momentum
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| 3 |
A.C. Generator based upon the |
- A. Lenz's law
- B. Maxwell's relation
- C. Faradays law of electromagnet induction
- D. Mutual induction
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| 4 |
Lenz's law was given by Heinrich lenz in: |
- A. 1894
- B. 1904
- C. 1854
- D. 1834
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| 5 |
If magnetic field is doubled then magnetic energy density becomes. |
- A. Four times
- B. Two times
- C. Three times
- D. Six times
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| 6 |
The Si unit of Mutual inductance is: |
- A. VA<sup>-1</sup>S<sup>-1</sup>
- B. VAS<sup>-1</sup>
- C. VSA<sup>-1</sup>
- D. ASV<sup>-1</sup>
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| 7 |
The Lenz's law fulfils. |
- A. Law of conservation of energy
- B. Law of conservation of charge
- C. Law of conservation of momentum
- D. Kirchhoff's law
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| 8 |
The current induced can be increased by: |
- A. Using a stronger magnetic field
- B. Moving the loop faster
- C. Replacing the loop bay coi of many turns
- D. All of above
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| 9 |
The device in the circuit that consume electrical energy are known as. |
- A. Dissipaters
- B. Generator
- C. Load
- D. Motors
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| 10 |
The magnitude of motional emf is given by |
|