Q. Which of the following method cannot be used to increase the bandwidth for cascaded RF amplifier stages?

View solution

Q. The current ICBO flows in

View solution

Q. The h parameter h11 is the same in CE and CC circuit.

View solution

Q. A second-order band-pass active filter can be obtained by cascading a low pass second order section having cut off frequency fOH with a high pass second order section having cut-off frequency fOL provided

View solution

Q. A sine wave is passed through an amplifier which severely limits it symmetrically. If then passes to a second amplifier which is narrow band and tuned to the frequency of the original sine wave. What will be the output wave from this second amplifier?

View solution

Q. In which configuration is ac collector voltage zero?

View solution

Q. Which connection is rarely used?

View solution

Q. Assertion (A): The main use of positive feedback is in oscillator circuits.

Reason (R): In an oscillator the loop gain Aβ is kept slightly more than unity

View solution

Q. In a biased limiter the clipping level can be adjusted by adjusting the voltage of battery.

View solution

Q. One input terminal of high gain comparator circuit is connected to ground and a sinusoidal voltage is applied to the other input. The output of comparator will be

View solution

Q. 3N 200 is a

View solution

Q. The A.C. resistance of the emitter diode will be

View solution

Q. For a transistor amplifier with self biasing network, the following components are used. R1 = 4 kΩ, R2 = 4 kΩ, RC = 1 kΩ. The approximate value of the stability factor 'S' will be

View solution

Q. The gate electrode in the FET corresponds to the

View solution

Q. The properties of JFET resemble those of

View solution

Q. Assertion (A): Transformer coupling has the disadvantage of the weight of transformer and Saturation of core

Reason (R): Transformer coupling is very suitable for impedance matching

View solution

Q. A Hartley oscillator is used for generation

View solution

Q. Astable multivibrator has

View solution

Q. Most small signal transistors are

View solution

Q. A FET is a better clapper than a BJT because it has

View solution