Q. Assertion (A): A self bias circuit is the most commonly used bias circuit for bipolar junction transistors

Reason (R): A self bias circuit limits the increase in collector or emitter current due to change in junction temperature.

View solution

Q. In an amplifier if conductor during the cycle is from 0 to 90° and again from 180° to 270°, the amplifier will be termed as

View solution

Q. A sine wave with slew rate distortion looks like

View solution

Q. If the Q of a single-stage single-tuned amplifier is doubled, then its bandwidth will

View solution

Q. A boot strap generally incorporates

View solution

Q. The common-drain amplifier, better known as the source follower, has a voltage gain __________ and the output signal is __________ with the input signal.

View solution

Q. Power transistors are invariably provided with

View solution

Q. Assertion (A): The ac load line is different from dc load line

Reason (R): The ac load resistance seen by collector and emitter is different from dc load resistance

View solution

Q. In a class C operation VCC = 40 V and VCE(sat) = 0.4 V. The efficiency is

View solution

Q. The absolute values of pinch-off voltage and gate-source cut-off voltage are

View solution

Q. Which of the following circuit does not need a coupling capacitor?

View solution

Q. Assertion (A): A large negative feedback is deliberately introduced in an amplifier to make its gain independent of variation is in parameters of active device and other components.

Reason (R): A large negative feedback results in a high value of return difference compared to unity which makes the feedback gain inversely proportional to feedback factor.

View solution

Q. In case of a transistor amplifier the emitter resistance Re is removed

View solution

Q. In oscillators class C operation is preferred because

View solution

Q. In a common emitter circuit all voltages are measured with respect to

View solution

Q. The h parameter equivalent to ac resistance re is

View solution

Q. The theoretical maximum efficiency of a half wave diode rectifier is

View solution

Q. Which of the following statement is correct?

View solution

Q. In a transistor push pull amplifier

View solution

Q. In a self bias circuit for CE amplifier, the base voltage is

View solution