Pinch-off voltage in a JFET is the gate to source voltage that gives unity drain current. the drain voltage that gives infinite drain current. the drain voltage that gives zero drain current. the gate to source voltage that gives zero drain current. TRUE ANSWER : ? YOUR ANSWER : ?
A differential amplifier is invariably used in the i/p stage of all OP-amps.This is dome basically to provide the OP-amps with a very high Open-loop gain Slew rate Bandwidth CMRR TRUE ANSWER : ? YOUR ANSWER : ?
When the JFET is no longer able to control the current, this point is called the pinch-off region. saturated point. depletion region. breakdown region. TRUE ANSWER : ? YOUR ANSWER : ?
In a JFET, the primary control on drain electric current is exerted by gate reverse bias. size of depletion regions. channel resistance. voltage drop across channel. TRUE ANSWER : ? YOUR ANSWER : ?
When the base resistor increases, the collector voltage will probably decrease. increase. All of these stay the same. TRUE ANSWER : ? YOUR ANSWER : ?
A diode (p-n junction) when reverse biased act as On Switch Off Switch Zener diode Capacitor TRUE ANSWER : ? YOUR ANSWER : ?
Generally, the gain of a transistor amplifier falls at high frequencies due to the Coupling capacitor at the output Skin effect Internal Capacitance of the device Coupling capacitor at the input TRUE ANSWER : ? YOUR ANSWER : ?
The feedback factor of a Wien bridge oscillator using Op-Amp is 1 1/4 1/3 1/2 TRUE ANSWER : ? YOUR ANSWER : ?
Which of following is the fastest switching device ? JFET. MOSFET. Triode. BJT. TRUE ANSWER : ? YOUR ANSWER : ?
The positive part of the output signal in a transistor circuit starts clipping, if Q point of the circuit moves none of these. toward the saturation point. toward the center of the load line. toward the cutoff point. TRUE ANSWER : ? YOUR ANSWER : ?