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

Q. In CE amplifier circuit, voltage gain is directly proportional to

View solution

Q. The heat sink disposes off heat mainly by

View solution

Q. A major advantage of TWT over a Klystron lies in its

View solution

Q. Pick the odd-one out

View solution

Q. In a CE amplifier the output coupling capacitor is short circuited. The dc collector voltage

View solution

Q. A certain transistor has αdc of 0.98 and a collectors leakage current of 5 μA. If IE = 1 mA, the collector current will be

View solution

Q. If 1.5% of the output of an amplifier is feedback positively to the input, the minimum gain required of the amplifier for oscillations to occur, is

View solution

Q. The use of a capacitor filter in a rectifier circuit gives satisfactory performance only when the load

View solution

Q. Two 3Ω speakers in series will have a total impedance of

View solution

Q. In a CE amplifier the ac signal is increased. Which of the following will not change?

View solution

Q. The ideal op-amp has the following characteristics

View solution

Q. The input differential stage of op-amp. 741 is baised at about 10 μA current such a low current of the input stage gives

1. high CMRR
2. high differential gain
3. low differential
4. high input impedance

Which of these are correct?

View solution

Q. IN 3242 is a

View solution