Daily review: Difference Between JFET and MOSFET | Zener Diode – Symbol, Construction, Circuit, Working and Applications | Transistor, MOSFET and IGFET Symbols Quiz

Q: Which of the following is a key difference between a JFET and a MOSFET?

JFETs operate with a reverse-biased gate junction, while MOSFETs use an insulated gate. — JFETs have a p-n junction, MOSFETs have an insulated gate using an oxide layer.

Q: What is the primary function of a Zener diode?

To provide a stable reference voltage. — Zener diodes are specifically designed to operate in reverse breakdown, providing a stable voltage.

Q: In a Zener diode, what happens when the reverse voltage exceeds the Zener voltage (Vz)?

The diode allows a large current to flow in the reverse direction. — Beyond Vz, the diode enters the breakdown region, allowing high reverse current to flow.

Q: Which of the following is the standard symbol for a Zener diode?

A diode symbol with a 'Z' shape on the cathode side. — The 'Z' shape distinguishes a Zener diode symbol from a regular diode.

Q: What is the main advantage of MOSFETs over BJTs (Bipolar Junction Transistors)?

Voltage-controlled operation and higher input impedance. — MOSFETs are voltage-controlled and have very high input impedance due to the insulated gate.

Q: Which of the following is NOT a terminal of a MOSFET?

Collector — Collector is a terminal of a BJT, but not a MOSFET.

Q: In an N-channel JFET, what type of charge carriers are responsible for current flow?

Electrons — N-channel JFETs use electrons as majority carriers.

Q: What is the name of the insulating layer in a MOSFET that separates the gate from the channel?

Oxide layer — The oxide layer (usually silicon dioxide) insulates the gate.

Q: Which of the following statements is true about the operation of a JFET?

The gate-source voltage controls the current flow through the channel. — The gate-source voltage controls the channel conductivity and drain current in a JFET.

Q: What is the main difference between a MOSFET and an IGFET?

IGFET is a more general term for MOSFETs, including those with different gate materials. — IGFET (Insulated Gate Field-Effect Transistor) is the broader term, and MOSFET is a common type of IGFET using a metal gate.

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Question 1 of 10

Which of the following is a key difference between a JFET and a MOSFET?

JFETs have a p-n junction, MOSFETs have an insulated gate using an oxide layer.

Question 2 of 10

What is the primary function of a Zener diode?

Zener diodes are specifically designed to operate in reverse breakdown, providing a stable voltage.

Question 3 of 10

In a Zener diode, what happens when the reverse voltage exceeds the Zener voltage (Vz)?

Beyond Vz, the diode enters the breakdown region, allowing high reverse current to flow.

Question 4 of 10

Which of the following is the standard symbol for a Zener diode?

The 'Z' shape distinguishes a Zener diode symbol from a regular diode.

Question 5 of 10

What is the main advantage of MOSFETs over BJTs (Bipolar Junction Transistors)?

MOSFETs are voltage-controlled and have very high input impedance due to the insulated gate.

Question 6 of 10

Which of the following is NOT a terminal of a MOSFET?

Collector is a terminal of a BJT, but not a MOSFET.

Question 7 of 10

In an N-channel JFET, what type of charge carriers are responsible for current flow?

N-channel JFETs use electrons as majority carriers.

Question 8 of 10

What is the name of the insulating layer in a MOSFET that separates the gate from the channel?

The oxide layer (usually silicon dioxide) insulates the gate.

Question 9 of 10

Which of the following statements is true about the operation of a JFET?

The gate-source voltage controls the channel conductivity and drain current in a JFET.

Question 10 of 10

What is the main difference between a MOSFET and an IGFET?

IGFET (Insulated Gate Field-Effect Transistor) is the broader term, and MOSFET is a common type of IGFET using a metal gate.

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