Q. The RC network of wein bridge oscillator consists of resistors and capacitors of values R = 220 kΩ and C = 250 PF Determine the frequency of oscillation

View solution

Q. Which of the following statement is correct?

View solution

Q. In a single stage differential amplifier, the output offset voltage is basically dependent on the mismatch of

View solution

Q. Which of the following amplifier circuits has highest input impedance?

View solution

Q. Which of the following device acts as an N-P-N and a P-N-P transistor connected base to base and emitter to controller?

View solution

Q. A differentiating amplifier has capacitor in the input path.

View solution

Q. Which of the following statement about TRIAC is incorrect?

View solution

Q. A half wave diode rectifier and full wave diode bridge rectifier both have an input frequency of 50 Hz. The frequencies of outputs respectively are

View solution

Q. Overall efficiency of class B amplifier is

View solution

Q. For a transistor to have-a larger β it must have and a

View solution

Q. JFET is also known as

View solution

Q. Drain feedback bias is often used with

View solution

Q. CMRR of a difference amplifier is equal to

View solution

Q. The ac collector current is nearly equal to

View solution

Q. From a measurement of the rise time of the output pulse of an amplifier whose input is a small amplitude square wave, one can estimate the following parameter of the amplifier

View solution

Q. In an amplifier, if the output current flows for 120° of the input cycle, the class of amplifier will be

View solution

Q. Assertion (A): If we overdrive an amplifier the output signal may get clipped

Reason (R): To dissipate heat to atmosphere a heat sink is sometimes attached to the case of transistor

View solution

Q. Which op-amp circuit uses a diode as one of the circuit components?

View solution

Q. Tuned amplifiers are used at radio frequencies.

View solution

Q. The knee voltages in silicon and germanium diodes respectively are

View solution