Q. In a transistor βdc is likely to vary between 100 and 400. The proper value of βdc to be used to located Q point is

View solution

Q. Which of the following noise becomes of great importance at high frequencies?

View solution

Q. High cut off frequency can be expected in case of

View solution

Q. Which coupling produces the minimum interference with frequency response?

View solution

Q. Assertion (A): A sine wave with slew rate distortion looks rectangular

Reason (R): The maximum rate of output voltage change is called slew rate

View solution

Q. In a P-N-P transistor, electrons flow

View solution

Q. A generator with an internal resistance of 600 Ω drives an amplifier whose input resistance is 400 Ω. The generator's open circuit voltages is 1 mV; the amplifier develops 100mV across an 8kΩ load. The input voltage to the amplifier is

View solution

Q. In a class C amplifier, full cycle conductor of the current is achieved by employing

View solution

Q. Higher order active filters are used for variable

View solution

Q. Which of the following statement is false?

View solution

Q. Assertion (A): The main use of Miller integrator is to generate ramp

Reason (R): An inverting amplifier can handle more than one input at the same time.

View solution

Q. Assertion (A): The duty cycle of a class C amplifier affects the power dissipation of transistor

Reason (R): At higher harmonics the efficiency of a class C amplifier becomes poor

View solution

Q. In a self bias circuit for CE amplifier the collector supply voltage is made twice. The collector current will

View solution

Q. In a full wave voltage doubler circuit, the input frequency is 560 Hz. The ripple frequency is

View solution

Q. Assertion (A): A tuned amplifier uses a parallel tuned circuit

Reason (R): A tuned amplifier is used to amplify a narrowband frequencies

View solution

Q. Thermal run away of a transistor occurs when

View solution

Q. JFET has __________ degree of isolation between input and output, and a __________ noise figure.

View solution

Q. The advantage of FET over BJT is

View solution

Q. The MOSFET is almost ideal as a switching device because

View solution

Q. The input and output signals for CE amplifier are always

View solution