MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Microwave Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The number of PIN diodes used in SPST switch and SPDT switch are the same. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
In the series configuration of a PIN diode switch, the terminated load impedance was found to be 50 Ω and the diode impedance was 60 Ω. Then the insertion loss of the switch is: |
| A. | 4 dB |
| B. | 2 dB |
| C. | 3.6 dB |
| D. | 4.8 dB |
| Answer» B. 2 dB | |
| 3. |
For a shunt configuration switch, the diode impedance is 40 Ω and the terminated line characteristic impedance is 50 Ω. Then the insertion loss of the switch is: |
| A. | 2.2 dB |
| B. | 4.2 dB |
| C. | 8.4 dB |
| D. | 3.6 dB |
| Answer» C. 8.4 dB | |
| 4. |
When PIN diode is used as a switch, the expression for insertion loss of the switch is given by: |
| A. | 10 log (Po/PL) |
| B. | 10 log (PL/P0) |
| C. | 10 log (PL. Pₒ) |
| D. | None of the mentioned |
| Answer» B. 10 log (PL/P0) | |
| 5. |
Under ideal conditions, when a PIN diode is used as a switch, the switch must have _______ insertion loss in the ON state. |
| A. | Maximum |
| B. | Zero |
| C. | Average |
| D. | Insertion loss cannot be defined for a switch |
| Answer» C. Average | |
| 6. |
WHEN_PIN_DIODE_IS_USED_AS_A_SWITCH,_THE_EXPRESSION_FOR_INSERTION_LOSS_OF_THE_SWITCH_IS_GIVEN_BY:?$ |
| A. | 10 log (Po/PL) |
| B. | 10 log (PL/P0) |
| C. | 10 log (PL. P‚Çí) |
| D. | None of the mentioned |
| Answer» B. 10 log (PL/P0) | |
| 7. |
In the series configuration of a PIN diode switch, the terminated load impedance was found to be 50 Ω and the diode impedance was 60 Ω. Then the insertion loss of the switch is:$# |
| A. | 4 dB |
| B. | 2 dB |
| C. | 3.6 dB |
| D. | 4.8 dB |
| Answer» B. 2 dB | |
| 8. |
For_a_shunt_configuration_switch,_the_diode_impedance_is_40_Ω_and_the_terminated_line_characteristic_impedance_is_50_Ω._Then_the_insertion_loss_of_the_switch_is:$# |
| A. | 2.2 dB |
| B. | 4.2 dB |
| C. | 8.4 dB |
| D. | 3.6 dB |
| Answer» C. 8.4 dB | |
| 9. |
The_number_of_PIN_diodes_used_in_SPST_switch_and_SPDT_switch_are_the_same. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Under ideal conditions, when a PIN diode is used as a switch, the switch must have _______ insertion loss in the ON state? |
| A. | Maximum |
| B. | Zero |
| C. | Average |
| D. | Insertion loss cannot be defined for a switch |
| Answer» C. Average | |
| 11. |
The working principle of series and shunt configuration single pole single throw switch is the same. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
A PIN diode can be used in either a series or a shunt configuration to form a __________ |
| A. | Single pole single throw switch |
| B. | Single pole double throw switch |
| C. | Amplifier |
| D. | Oscillator |
| Answer» B. Single pole double throw switch | |
| 13. |
The resistance of the PIN diode with positive bias voltage: |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | Insufficient data |
| Answer» C. Remains constant | |
| 14. |
The junction resistance and capacitance of the intrinsic region in a PIN diode are connected______ in the equivalent circuit of PIN diode. |
| A. | Series |
| B. | Parallel |
| C. | Connected across package capacitance |
| D. | None of the mentioned |
| Answer» C. Connected across package capacitance | |
| 15. |
The behavior of a PIN diode is entirely different from normal diodes at all frequency of operation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 16. |
The material out of which PIN diode is made is: |
| A. | Silicon |
| B. | Germanium |
| C. | GaAs |
| D. | None of the mentioned |
| Answer» B. Germanium | |
| 17. |
A PIN diode consists of ______number of semiconductor layers. |
| A. | Three |
| B. | Two |
| C. | Four |
| D. | One |
| Answer» B. Two | |