| 1 |
<p class="MsoNormal">The output of a two input NOR gate is 1 when:<o:p></o:p></p> |
- A. <p class="MsoNormal">A is 1 and B is 0<o:p></o:p></p>
- B. <p class="MsoNormal">A is 0 and B is 1<o:p></o:p></p>
- C. <p class="MsoNormal">Both a and b are 0<o:p></o:p></p>
- D. <p class="MsoNormal">Both a and b are 1<o:p></o:p></p>
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| 2 |
<p class="MsoNormal">George Boole invented:<o:p></o:p></p> |
- A. <p class="MsoNormal">Boolean algebra<o:p></o:p></p>
- B. <p class="MsoNormal">Arithmetic algebra<o:p></o:p></p>
- C. <p class="MsoNormal">Mean algebra<o:p></o:p></p>
- D. <p class="MsoNormal">Geometry<o:p></o:p></p>
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| 3 |
The voltage is decreased by: |
- A. Step-up transformer
- B. Step-down transformer
- C. A.C. generator
- D. D.C. Motor
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| 4 |
The step-up transformer |
- A. Increases the input current
- B. Increase the input voltage
- C. Has more turns in the primary
- D. Has less turns in hte secondary coil
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| 5 |
Which device has two coils, primary and secondary? |
- A. D.C. Motor
- B. Transformer
- C. A.C. genrator
- D. a and b
|
| 6 |
The direction of induced e.m.f. in a circuit is in accordance with conservation of. |
- A. Mass
- B. Charge
- C. Momentum
- D. Energy
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| 7 |
<p class="MsoNormal">To see from submarine and the ship at the surface of water,
we use:<o:p></o:p></p> |
- A. <p class="MsoNormal">Telescope<o:p></o:p></p>
- B. <p class="MsoNormal">Microscope<o:p></o:p></p>
- C. <p class="MsoNormal">Periscope<o:p></o:p></p>
- D. <p class="MsoNormal">Prism<o:p></o:p></p>
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| 8 |
In D.C.motor split rings are made of: |
- A. Steel
- B. Carbon
- C. Copper
- D. Iron
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| 9 |
In electric motor, the brushes are made of: |
- A. Lead
- B. Graphite
- C. Iron
- D. Wood
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| 10 |
The magnetic field of a solenoid resembles as: |
- A. Iron wire
- B. U-shape magnet
- C. Bar magnet
- D. Point charge.
|