A JFET has three terminals namely ______.
Source, gate, drain
Understanding JFET Terminals
A JFET stands for Junction Field-Effect Transistor. It is a type of field-effect transistor used as an electronically-controlled switch, or as a voltage-controlled resistor. Like most transistors, it has three terminals, which are used to connect it into an electronic circuit.
The names of the terminals of a JFET are distinct from those of other types of transistors or electronic devices.
Identifying the Correct JFET Terminals
Let's look at the common terminals for different electronic components mentioned in the options:
- Vacuum Tubes: Typically have terminals like anode, cathode, and grid (for triodes).
- Bipolar Junction Transistors (BJTs): Have terminals named emitter, base, and collector. These are current-controlled devices.
- Junction Field-Effect Transistors (JFETs): Have terminals named source, gate, and drain. These are voltage-controlled devices.
Based on this information, the correct set of terminals for a JFET are source, gate, and drain.
Analyzing the Given Options
- Option 1: Cathode, anode, grid. These are terminals of vacuum tubes, not JFETs.
- Option 2: Emitter, base, collector. These are terminals of Bipolar Junction Transistors (BJTs), not JFETs.
- Option 3: Source, gate, drain. These are the correct terminals for a Junction Field-Effect Transistor (JFET).
- Option 4: Emitter, gate, collector. This mixes BJT and JFET terminal names.
Therefore, the terminals of a JFET are indeed Source, Gate, and Drain.
Important Questions from Types of FET
A JFET is also called ________ device.
In JFET, the Pinch‐off Voltage can be defined as:
In JFET, the current density in the x-direction is:
A. σ(x)E x
B. qN DμE x
C. \(\rm \frac{q}{2 \in_s}N_D\mu\)
D. \(\rm \frac{N_D\mu}{2 \in_s}\)
Choose the correct answer from the options given below:
The pull up to pull down ratio for an n mos inverter driven by another n mos inverter can be evaluated from:
(A) Vi nv = V t − \(\rm\frac{V_{t d}}{\sqrt{Zpu/Zpd}}\)
(B) V inv = \(\rm\frac{−V_{t d}}{\sqrt{Zpu/Zpd}}\)
(C) \(\rm\frac{W_{pd}}{L_{pd}}\) (V inv − V t) 2= \(\rm\frac{W_{p u}}{L_{p u}}\) (−V td )2
(D) \(\rm\frac{W_{p d}}{L_{p d}}\) (V inv − V t ) = \(\rm\frac{W_{p u}}{L_{pu}}\) (−V td )2
Choose the correct answer from the options given below:
The layers of Nos involves a subset of layers. For NMOS we require:
(A) Contact, (Black or Brown)
(B) Polysilicon (Green)
(C) Metal (Blue)
(D) Implant (Yellow)
Choose the correct answer from the options given below:
