| 1 |
Hard disk is made of: |
- A. Aluminium
- B. Copper
- C. Iron
- D. Plastic
|
| 2 |
The device which is used to convert sound waves into electrical signal is called: |
- A. Ear piece
- B. Microphone
- C. Transmission channel
- D. Receiver
|
| 3 |
<p class="MsoNormal">electroscope can also be charges by the process of:<o:p></o:p></p> |
- A. <p class="MsoNormal">electrostatics<o:p></o:p></p>
- B. <p class="MsoNormal">electricity<o:p></o:p></p>
- C. <p class="MsoNormal">convection<o:p></o:p></p>
- D. <p class="MsoNormal">conduction<o:p></o:p></p>
|
| 4 |
<p class="MsoNormal">which can be used to distinguish between insulators and
conductors:<o:p></o:p></p> |
- A. <p class="MsoNormal">electricity<o:p></o:p></p>
- B. <p class="MsoNormal">telescope<o:p></o:p></p>
- C. <p class="MsoNormal">temperature<o:p></o:p></p>
- D. <p class="MsoNormal">electroscope<o:p></o:p></p>
|
| 5 |
Which is the most suitable means of reliable continuous communication between an orbiting satellite and Earth? |
- A. Microwaves
- B. Radio waves
- C. Sound wave
- D. any light waves
|
| 6 |
<p class="MsoNormal">Why household appliances should be connected in parallel
with the voltage source:<o:p></o:p></p> |
- A. <p class="MsoNormal">To increase the resistance of the circuit<o:p></o:p></p>
- B. <p class="MsoNormal">To decrease the resistance of the circuit<o:p></o:p></p>
- C. <p class="MsoNormal">To provide each
appliance the same voltage as the power source<o:p></o:p></p>
- D. <p class="MsoNormal">To provide each appliance the same current as the power
source<o:p></o:p></p>
|
| 7 |
<p class="MsoNormal">an electrolytic capacitor is used to store large amounts of
charge at:<o:p></o:p></p> |
- A. <p class="MsoNormal">low voltage<o:p></o:p></p>
- B. <p class="MsoNormal">high voltage<o:p></o:p></p>
- C. <p class="MsoNormal">neutral<o:p></o:p></p>
- D. <p class="MsoNormal">positive<o:p></o:p></p>
|
| 8 |
<p class="MsoNormal">electric field is weak when:<o:p></o:p></p> |
- A. <p class="MsoNormal">lines are far apart<o:p></o:p></p>
- B. <p class="MsoNormal">lines are close together<o:p></o:p></p>
- C. <p class="MsoNormal">no lines are present<o:p></o:p></p>
- D. <p class="MsoNormal">lines are directed outside<o:p></o:p></p>
|
| 9 |
Which memory consists of integrated circuits? |
- A. Primary memory
- B. Audio cassette
- C. Video cassette
- D. Compact cassette
|
| 10 |
<p class="MsoNormal">Which is the best material for making connecting wires:<o:p></o:p></p> |
- A. <p class="MsoNormal">Iron<o:p></o:p></p>
- B. <p class="MsoNormal">Copper<o:p></o:p></p>
- C. <p class="MsoNormal">Tungsten<o:p></o:p></p>
- D. <p class="MsoNormal">Nickel<o:p></o:p></p>
|