| 1 |
Which of the following is used as rectifier; |
- A. semi - conductor diode
- B. resistors
- C. capacitors
- D. Germanium
|
| 2 |
Which of the following are electromagnetic waves: |
- A. sound
- B. water waves
- C. Ultrasound
- D. light
|
| 3 |
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
|
| 4 |
Which disk consisting of metal plates for recording. |
- A. Floopy
- B. RAM
- C. HARD
- D. CD
|
| 5 |
Diodes are used to. |
- A. Convert A.C. into D.C
- B. Convert D.C into A.C
- C. Store Charge
- D. Change voltage
|
| 6 |
Word FAX is short form of. |
- A. Facsiline
- B. Facsimile
- C. Fasimile
- D. None of these
|
| 7 |
The number of hovering satellites which can send transmissions to all over the world: |
- A. one
- B. Two
- C. Three
- D. Four
|
| 8 |
analogue signal is recorded on. |
- A. Magnetic tape
- B. Floppy disk
- C. Hard Disk
- D. C.D
|
| 9 |
Revolutionary charges have occur in last ............. years. |
|
| 10 |
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
|
