ECAT Pre General Science Physics Chapter 16 Alternating Current

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  • Chapter NameCh 16 - Alternating Current

ECAT Pre General Science Physics Chapter 16 Alternating Current

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ECAT Pre General Science Physics Chapter 16 Alternating Current

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Question # 1

The total reactance of a series RLC circuit at resonance is

Question # 2

The impedance of RLC series resonance circuit at resonant frequency is

Question # 3

In a normally biased n-p-n transistor, an electron c current IEflows from the

Question # 4

When the pn-junction is connected reversed biased, its resistance is of the order of

Question # 5

The time interval during which the Voltage source changes its polarity once is known as:

Question # 6

At resonance frequency the impedance of parallel resonance circuit is

Question # 7

If we connected the ordinary DC ammeter to measure alternating current, it would measure its:

Question # 8

A diode characteristic curve is a plot between

Question # 9

When the pn-junction is forward biased. the current flows through it is of the order of

Question # 10

In a transistor, if the central region is n-type, then this type of transistor is known as

Question # 11

The circuit which is used to smooth the output voltage of the full-wave rectification is known as

Question # 12

In which of the following diodes when an electron combines with a hole during the forward biasing, photon of visible light is emitted.

Question # 13

The length of rotating vector (on a certain scale) represents the:

Question # 14

The value of the potential difference across the depletion region for the case of germanium is

Question # 15

The RMS value of alternating current is:

Question # 16

At resonance, the impedance of RLC series circuit is

Question # 17

The value of the input resistance of OP-AMP is of the order of

Question # 18

The alternative voltage of current is actually measured by:

Question # 19

The bridge circuit of full wave rectification uses

Question # 20

The closed loop gain of the inverting amplifier is written as

Question # 21

Mathematical manipulation of the two quantized states can be best carried if they are represented by

Question # 22

Which of the following has a great concentration of impurity

Question # 23

When either L or C is increased, the resonant frequency of the RLC series circuit

Question # 24

The phase angle of a series RLC circuit at resonance is

Question # 25

OP-AMP has the following input terminals

Question # 26

Which one of the following is correct?

Question # 27

The sum of positive and negative peak values is called:

Question # 28

For normal operation of transistor, the batteries

Question # 29

A digital system deals with quantities or variables which have

Question # 30

The highest value reached by the voltage or current:

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