| 1 |
in binary system. 37 is written as. |
- A. 101101
- B. 100101
- C. 110011
- D. 101011
|
| 2 |
The elements used to increase the number of free electrons in the semi - conductor belong to: |
- A. 2<sup>nd</sup> group
- B. 3<sup>rd</sup> group
- C. 4<sup>th</sup> group
- D. 5<sup>th</sup> group
|
| 3 |
Which of the following is a brain of computer? |
- A. Central processing unit
- B. Mouse
- C. Monitor
- D. Hard disc
|
| 4 |
the number of (101)<sub>10</sub> in decimal is equal to .......... inbinary. |
- A. 0101111
- B. 0000101
- C. 10101101
- D. 1100101
|
| 5 |
The speed of radio wave is: |
- A. Light
- B. Air
- C. Sound
- D. Rocket
|
| 6 |
The major function of electronic devices is to amplify the ........ signals. |
- A. Stronge electric
- B. Semi strong electric
- C. Both a and c
- D. weak electric
|
| 7 |
The number of hovering satellites which can send transmissions to all over the world: |
- A. one
- B. Two
- C. Three
- D. Four
|
| 8 |
The examples of semi - conductors: |
- A. sodium and potassium
- B. calcium and potassium
- C. Germanium and silicon
- D. carbon and nitrogen
|
| 9 |
The substances through which current can pass easily are called: |
- A. conductors
- B. insulators
- C. Semi - conductors
- D. Non - Electrolytes
|
| 10 |
Electric signal is converted into digital signal by. |
- A. Key board
- B. Monitor
- C. Scanner
- D. Modem
|
