Q. A Darlington circuit is obtained by connecting

View solution

Q. A CE amplifier has a high input signal. In the wave shape of emitter current

View solution

Q. An inverting voltage feedback is a

View solution

Q. If a transistor is operating with both of its Junctions forward biased, but with the collector base forward biased, but with the collector base forward bias greater than the emitter-base forward bias, then it is operating in the

View solution

Q. In a CE amplifier the Q point is very close to cutoff point on the load line. This results in

View solution

Q. In an op-amp comparator, the positive or negative output is

View solution

Q. In logarithmic amplifiers, output voltage is equal to

View solution

Q. In a series regulated power supply circuit the voltage gain of pass transistor satisfies the condition

View solution

Q. Occasionally a discrete amplifier user RF chokes instead of collector resistors. Such amplifiers are inherently

View solution

Q. In oscillator circuits the energy feedback to its input terminal from output is

View solution

Q. When narrow current pulses drive a high Q resonant circuit the voltage across the circuit looks like

View solution

Q. The multivibrator circuit that has a typical application of converting sinusoidal input into a square wave output is

View solution

Q. The feedback resistance rd in small signal model of MOSFET is of the order of

View solution

Q. Which amplifier has a voltage gain of less than 1?

View solution

Q. A clamper

View solution

Q. For holding the drain current constant in spite of large changes in JFET parameters

View solution

Q. The main disadvantage of a JFET is

View solution

Q. For Q >> 1, the output frequency of LC oscillator is equal to resonant frequency.

View solution

Q. The transconductance curve of a JFET is

View solution

Q. The input resistance R, of an ideal voltage amplifier is __________ and that of a current amplifier is __________ .

View solution