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18th Chapter

### 12th Class Physics Chapter 18 Test

Here you can prepare 12th Class Physics Chapter 18 Electronics Test. Click the button for 100% free full practice test.

## Second Year Physics Chapter 18 Online MCQ Test for 2nd Year Physics Chapter 18 Electronics Preparation

This online test contains MCQs about following topics:.

- Rectification - Specially Designed p-n Junction - Transistors - Transistor as an Amplifier - Transistor as a Switch - Operational Amplifier - OP-AMP as Inverting Amplifier - OP-AMP as Non-Inverting Amplifier - OP-AMP as a Comparator - Comparator as a Night Switch - Digital Systems - Fundamental Logic Gates - Other Logic Gates - Applications of Gates in Control Systems

FSC Part 2 Physics Ch 18 Test

### Second Year Physics Chapter 18 Online MCQ Test for 2nd Year Physics Chapter 18 Electronics Preparation

1 The term invertor is used for.
• A. NOR gate
• B. XNOR gate
• C. NAND gate
• D. NOT gate
2 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
3 Which diode works at reverse biasing.
• A. LED
• B. Photo voltaic cell
• C. Photo diode
• D. Silicon diode
4 OR gate is represented by:
• A. X = A+B
• B. X=A.B
• C. X=A+B
• D. X=A.B
5 Greater concentration of impurity is added in.
• A. Base
• B. Emitter
• C. Collector
• D. LED
6 For normal use:
• A. Emitter base function is reversed biased
• B. Collector base junction is reserved biased
• C. Emitter base junction is forward biased
• D. Both c and b
7 A PN junction can not be sued a.
• A. Rectifier
• B. Amplifier
• C. Detector
• D. LED
8 In a transistor, collector current is controlled by:
• A. Collector voltage
• B. Base current
• C. Collector resistance
• D. All of the above
9 The P.D develop in case of germanium is:
• A. 0.3
• B. 0.7
• C. 0.5
• D. 0.9
10 The output voltage of a rectifier is.
• A. Smooth
• B. Pulsating
• C. Alternating
• D. Per featly direct

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