| 1 |
Conversation of only one half of A.C. into D.C. is called. |
- A. Half wave amplification
- B. Wave amplification
- C. Half wave electrification
- D. Half wave rectification
|
| 2 |
The gate, which changes the logic level to its opposite level is called |
- A. NOR gate
- B. AND gate
- C. OR gate
- D. NOT gate
|
| 3 |
The term invertor is used for. |
- A. NOR gate
- B. XNOR gate
- C. NAND gate
- D. NOT gate
|
| 4 |
A two inputs NAND gat with inputs a and b has an output '0' if. |
- A. B is zero
- B. A is zero
- C. Both A and B are 1
- D. Both A and B are '0'
|
| 5 |
For normal transistor the emitter current can be given by |
- A. I<sub>E</sub> = I<sub>C</sub>
- B. I<sub>E</sub> = I<sub>C</sub> + I<sub>B</sub>
- C. I<sub>E</sub> = I<sub>B</sub>
- D. None of these
|
| 6 |
The device which are required to convert various physical quantities into electric voltage are called. |
- A. Filters
- B. Rectifiers
- C. Amplifiers
- D. Sensors
|
| 7 |
The use of LDR is in the circuit of. |
- A. Logic gate
- B. Rectifier
- C. Oscillator
- D. High Switch
|
| 8 |
Rectification is the process of converting. |
- A. D.C. into A.C.
- B. A.C. in to D.C.
- C. Low signal to high
- D. High signal to low
|
| 9 |
In an N-type silicon, which of the following statement is true? |
- A. Electrons are majority carriers & trivalent atoms are the dopants
- B. Electrons are majority carriers & pentavalent atoms are the dopants
- C. Holes are minority carriers & pentavalent atoms are the dopants.
- D. Holes are minority carriers & trivavalent atoms are the dopants.
|
| 10 |
The ratio of potential barriers of Ge to Si at room temperatrue is. |
- A. 7:3
- B. 1:3
- C. 2:5
- D. 3:7
|
