20+ Top IMPATT Diodes MCQs with Answers
IMPATT diode stands for:
a) Intensely Pulsed Avalanche Transit-Time diode
b) Impact Avalanche Transit-Time diode
c) Intense Avalanche Transit-Time diode
Hint: IMPATT stands for Impact Avalanche Transit-Time.
The primary application of IMPATT diodes is in:
c) Microwave oscillators
Hint: IMPATT diodes are widely used in microwave oscillators.
The operating principle of an IMPATT diode is based on:
a) Zener breakdown
b) Avalanche breakdown
c) Transit-time effect
Hint: IMPATT diodes operate on the transit-time effect.
IMPATT diodes are commonly made of:
c) Gallium arsenide
Hint: IMPATT diodes are typically made of gallium arsenide.
The main region of operation in an IMPATT diode is the:
a) Depletion region
b) Avalanche region
c) Transit-time region
Hint: IMPATT diodes operate mainly in the transit-time region.
The main advantage of IMPATT diodes is their:
a) High efficiency
b) Low cost
c) High power capability
Hint: IMPATT diodes can handle high power levels.
The frequency of oscillation in an IMPATT diode is determined by:
a) The doping concentration
b) The applied voltage
c) The transit time of carriers
Hint: The frequency of oscillation depends on the transit time of carriers.
IMPATT diodes are often used in:
a) Low-frequency circuits
b) High-frequency circuits
c) DC circuits
Hint: IMPATT diodes find applications in high-frequency circuits.
The diode structure of an IMPATT diode resembles that of a:
a) Schottky diode
b) Zener diode
c) PIN diode
Hint: IMPATT diodes have a structure similar to PIN diodes.
The transit time in an IMPATT diode is the time taken by carriers to:
a) Tunnel through the depletion region
b) Move through the avalanche region
c) Travel from one end to the other
Hint: Transit time is the time taken for carriers to travel across the diode.
The I-V characteristic of an IMPATT diode is generally:
Hint: The I-V curve of an IMPATT diode is exponential.
IMPATT diodes are commonly used in:
a) Rectifier circuits
b) Amplifier circuits
c) Oscillator circuits
Hint: IMPATT diodes are extensively used in oscillator circuits.
The current in an IMPATT diode is mainly due to:
Hint: In an IMPATT diode, the current is carried primarily by electrons.
What is the typical operating frequency range of IMPATT diodes?
a) Microwave frequencies
b) Radio frequencies
c) Audio frequencies
Hint: IMPATT diodes typically operate in the microwave frequency range.
The transit time effect in IMPATT diodes results in:
a) Negative resistance
b) Positive resistance
c) Infinite resistance
Hint: The transit time effect leads to negative resistance.
The efficiency of an IMPATT diode is generally:
Hint: IMPATT diodes have lower efficiency compared to other diodes.
IMPATT diodes can be used in _________ circuits for high-frequency applications.
Hint: IMPATT diodes are used in non-linear circuits for high-frequency applications.
The oscillation frequency of an IMPATT diode can be tuned by:
a) Changing the temperature
b) Changing the doping concentration
c) Changing the applied voltage
Hint: The oscillation frequency can be tuned by adjusting the applied voltage.
IMPATT diodes are also known as:
a) Microwave diodes
b) Transistor diodes
c) Avalanche diodes
Hint: IMPATT diodes are often referred to as microwave diodes.
The negative resistance characteristic in an IMPATT diode leads to:
a) Exponential decrease in current
b) Exponential increase in current
c) Linear increase in current
Hint: Negative resistance results in an exponential increase in current.
|Analog Layout Design Interview Questions||Memory Design Interview Questions|
|Physical Design Interview Questions||Verilog Interview Questions|
|Digital Design Interview Questions||STA Interview Questions|