Q. Low gain-bandwidth product of a JFET is due to

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Q. In a CE amplifier it is desired that the signal should be able to swing equally in both directions. Then the Q point should be

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Q. In a base driver amplifier the voltage gain is the ratio of

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Q. Assertion (A): A class C amplifier is a timed amplifier which needs a tank circuit as the load in the collector circuit of the transistor for its proper operation

Reason (R): In class C operation collector current flows for less than 180° of the ac cycle and thus flows in pulses

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Q. A junction Field Effect Transistor can operate in

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Q. In the case of an amplifier, the normalised voltage gain is given by.where f0 is zero frequency, fP is pole frequency. For a standard frequency response of the amplifier,

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Q. In a rectifier only a portion of input power is converted into DC power. The rest is AC power.

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Q. The slope of the transfer characteristics of an N-channel JFET is

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Q. In a current mirror

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Q. In which of the following circuits is op-amp used in open loop configuration?

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Q. In a diode rectifier with a capacitance input filter, a surge current is likely to flow when the circuit is switched on. The cause of this surge current is

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Q. In deriving ac equivalent circuit for an amplifier circuit we short circuit

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Q. Which of the following statements is false?

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Q. Which of the following amplifier circuit using junction transistor has the best gain?

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Q. In an op-amp differentiator

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Q. In switching devices, gold doping is used to

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Q. Assertion (A): If power gain doubles the power gain increases by 3 dB

Reason (R): The bel power gain of cascaded stages is equal to sum of each bel power gain

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Q. The V MOS can handle __________ currents than a conventional MOSFET.

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Q. Assertion (A): A resistor is a passive load and a transistor is an active load

Reason (R): Op-amp is mostly used in feedback mode

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Q. Which mode is usually preferred for cascading?

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