Question 1

There are two types of MOSFETs, the depletion-enhancement MOSFET (DE-MOSFET) and the enhancement-only MOSFET (E-MOSFET).

Accepted Answer

The statement correctly identifies the two main types of MOSFETs: depletion-enhancement MOSFET (DE-MOSFET) and enhancement-only MOSFET (E-MOSFET).

Question 2

The JFET is said to be a voltage-operated device.

Accepted Answer

The JFET (Junction Field-Effect Transistor) operates based on the voltage applied to the gate terminal, which controls the current flow through the channel between the source and drain terminals.

Question 3

Vacuum tubes have taken the place of FETs, which were used to operate high-impedance meters for many years.

Accepted Answer

FETs (Field-Effect Transistors) have largely replaced vacuum tubes in many applications due to their smaller size, greater efficiency, and lower power consumption. Vacuum tubes were used before the widespread adoption of FETs and other solid-state devices.

Question 4

One of the most common applications for field effect transistors are ____.&#10;A) ohmmeters&#10;B) ammeters&#10;C) digital multimeters&#10;D) voltmeters

Accepted Answer

Field effect transistors (FETs) are widely used in digital multimeters due to their high input impedance, which makes them ideal for measuring voltage without significantly affecting the circuit being tested.

Question 5

The pins of both the n-channel and p-channel JFETs are labeled ____.&#10;A) drain, sink, and gate&#10;B) sink, gate, and source&#10;C) gate, source, and tunnel&#10;D) drain, source, and gate

Accepted Answer

The pins of both n-channel and p-channel JFETs are correctly labeled as drain, source, and gate.

Question 6

____ control the flow of current through them with an electric field.&#10;A) NANDs&#10;B) FETs&#10;C) Gates&#10;D) Transformers

Accepted Answer

FETs (Field-Effect Transistors) control the flow of current through them using an electric field. This is a fundamental characteristic of FETs, distinguishing them from other electronic components that might use different principles for controlling current flow.

Question 7

One of the great advantages of any field effect transistor is the impedance of the ____.&#10;A) gate circuit&#10;B) p-channel&#10;C) drain&#10;D) sink

Accepted Answer

The gate circuit of a field effect transistor (FET) has a very high impedance, which is one of its significant advantages. This high impedance means that the gate circuit draws very little current, allowing FETs to be used in applications where minimal power consumption is crucial.

Question 8

There are two basic types of FETs: the junction field effect transistor (JFET) and the metal oxide&#160; semiconductor field effect transistor (MOSFET).

Accepted Answer

JFETs and MOSFETs are indeed the two basic types of Field Effect Transistors (FETs), with JFETs using a junction to control current and MOSFETs using a metal-oxide-semiconductor structure.

Question 9

Field effect transistors are still used rarely in today's technology.

Accepted Answer

Field effect transistors (FETs) are widely used in today's technology, including in integrated circuits, computer processors, and other electronic devices due to their efficiency and versatility.

Question 10

When checking MOSFETs with an ohmmeter, if the device is a(n) ____ there should be no continuity indicated between any of the pins.&#10;A) E-MOSFET&#10;B) JFET&#10;C) FET&#10;D) CMOSFET

Accepted Answer

An E-MOSFET (Enhancement MOSFET) should show no continuity between any of its pins when checked with an ohmmeter because it is normally off and requires a gate voltage to conduct.

Deck 14: Field Effect Transistors