Question 1

Which of the following is true?

Accepted Answer

A) coupling capacitors causes the gain to fall off at high frequencies 
B) internal capacitor of a device causes the gain to fall off at low frequencies 
C) all of the mentioned 
D) none of the mentioned 
A) coupling capacitors causes the gain to fall off at high frequencies 
B) internal capacitor of a device causes the gain to fall off at low frequencies 
C) all of the mentioned 
D) none of the mentioned D

Question 2

Find net voltage gain, given hfe = 50 and hie = 1k?.

Accepted Answer

A) 27.68 
B) -22 
C) 30.55 
D) -27.68 
A) 27.68 
B) -22 
C) 30.55 
D) -27.68 D

Question 3

During high frequency applications of a B.J.T, which parasitic capacitors arise between the collector and the base?

Accepted Answer

A) cje and cb 
B) ccs 
C) c? 
D) cµ 
A) cje and cb 
B) ccs 
C) c? 
D) cµ D

Question 4

Gain bandwidth frequency is GBP= 3000 Mhz. The cut-off frequency is f=10Mhz. What is the CE short circuit current gain at the ? cutoff frequency?

Accepted Answer

A) 212 
B) 220 
C) 300 
D) 200 
A) 212 
B) 220 
C) 300 
D) 200

Question 5

Under what condition can the circuit shown be called a compensated attenuator.

Accepted Answer

A) c1r1 = c2r2 
B) c1r2 = c2r1 
C) c1c2 = r1r2 
D) r1 = 0 
A) c1r1 = c2r2 
B) c1r2 = c2r1 
C) c1c2 = r1r2 
D) r1 = 0

Question 6

In an RC coupled CE amplifier, when the input frequency increases, which of these are incorrect?

Accepted Answer

A) reactance csh decreases 
B) voltage gain increases 
C) voltage gain decreases due to shunt capacitance 
D) an rc coupled amplifier behaves like a low pass filter 
A) reactance csh decreases 
B) voltage gain increases 
C) voltage gain decreases due to shunt capacitance 
D) an rc coupled amplifier behaves like a low pass filter

Question 7

When applying miller's theorem to resistors, resistance R1 is for node 1 and R2 for node 2. If R1>R2, then for same circuit, then for capacitance for which the theorem is applied, which will be larger, C1 or C2?

Accepted Answer

A) c1 
B) c2 
C) both are equal 
D) insufficient data 
A) c1 
B) c2 
C) both are equal 
D) insufficient data

Question 8

If a C.E. stage has a load Rl and transconductance gm, what is the factor by which the capacitance between the base and the collector at the input side gets multiplied?

Accepted Answer

A) 1 + gmrl 
B) 1 - gmrl 
C) 1 + 2*gmrl 
D) 1 - 2*gmrl 
A) 1 + gmrl 
B) 1 - gmrl 
C) 1 + 2*gmrl 
D) 1 - 2*gmrl

Question 9

Which effect plays a critical role in producing changes in the frequency response of the B.J.T.?

Accepted Answer

A) thevenin's effect 
B) miller effect 
C) tellegen's effect 
D) norton's effect 
A) thevenin's effect 
B) miller effect 
C) tellegen's effect 
D) norton's effect

Question 10

During high frequency applications of a B.J.T., which parasitic capacitors arise between the base and the emitter?

Accepted Answer

A) cje and cb 
B) ccs 
C) cb 
D) ccs and cb 
A) cje and cb 
B) ccs 
C) cb 
D) ccs and cb

Question 11

During high frequency applications of a B.J.T., which parasitic capacitors arise between the collector and the emitter?

Accepted Answer

A) no capacitor arises 
B) ccs 
C) cb 
D) ccs and cb 
A) no capacitor arises 
B) ccs 
C) cb 
D) ccs and cb

Question 12

Which parasitic capacitors do not affect the frequency response of the C.E. stage, of the B.J.T.?

Accepted Answer

A) cje and cb 
B) ccs and cµ 
C) cb and cµ 
D) no parasitic capacitor gets deactivated 
A) cje and cb 
B) ccs and cµ 
C) cb and cµ 
D) no parasitic capacitor gets deactivated

Question 13

Which of the statement is incorrect?

Accepted Answer

A) at unity gain frequency the ce short circuit current gain becomes 1 
B) unity gain frequency is the same as gain 
A) at unity gain frequency the ce short circuit current gain becomes 1 
B) unity gain frequency is the same as gain

Question 14

In Miller's theorem, what is the constant K?

Accepted Answer

A) total voltage gain 
B) internal voltage gain 
C) internal current gain 
D) internal power gain 
A) total voltage gain 
B) internal voltage gain 
C) internal current gain 
D) internal power gain

Question 15

Which parasitic capacitors don't affect the frequency response of the C.C. stage of the B.J.T.?

Accepted Answer

A) ccs 
B) ccs and cb 
C) cb 
D) ccs and cµ 
A) ccs 
B) ccs and cb 
C) cb 
D) ccs and cµ

Question 16

If the total capacitance between the base and the emitter increases by a factor of 2, the transit frequency

Accepted Answer

A) reduces by 2 
B) increases by 2 
C) reduces by 4 
D) increases by 4 
A) reduces by 2 
B) increases by 2 
C) reduces by 4 
D) increases by 4

Question 17

Which of the following is true?

Accepted Answer

A) monolithic ic amplifiers are directly coupled or dc amplifiers 
B) televisions and radios use tuned amplifiers 
C) audio amplifiers have coupling capacitor amplifier 
D) all of the mentioned 
A) monolithic ic amplifiers are directly coupled or dc amplifiers 
B) televisions and radios use tuned amplifiers 
C) audio amplifiers have coupling capacitor amplifier 
D) all of the mentioned

Question 18

General representation of the frequency response curve is called

Accepted Answer

A) bode plot 
B) miller plot 
C) thevenin plot 
D) bandwidth plot 
A) bode plot 
B) miller plot 
C) thevenin plot 
D) bandwidth plot

Question 19

If a C.E. stage has a load Rl and transconductance gm, what is the factor by which the capacitance between the base and the collector at the output side gets multiplied?

Accepted Answer

A) 1 + 1/gmrl 
B) 1 - 1/gmrl 
C) 1 + 2/gmrl 
D) 1 - 2/gmrl 
A) 1 + 1/gmrl 
B) 1 - 1/gmrl 
C) 1 + 2/gmrl 
D) 1 - 2/gmrl

Question 20

Which parasitic capacitors don't affect the frequency response of the C.B. stage of the B.J.T.?

Accepted Answer

A) none of the parasitic capacitances 
B) all the parasitic capacitances 
C) some of the coupling capacitors 
D) ccs and cb 
A) none of the parasitic capacitances 
B) all the parasitic capacitances 
C) some of the coupling capacitors 
D) ccs and cb

Which of the following is true?

Find net voltage gain, given hfe = 50 and hie = 1k?.

During high frequency applications of a B.J.T, which parasitic capacitors arise between the collector and the base?

Gain bandwidth frequency is GBP= 3000 Mhz. The cut-off frequency is f=10Mhz. What is the CE short circuit current gain at the ? cutoff frequency?

Under what condition can the circuit shown be called a compensated attenuator.

In an RC coupled CE amplifier, when the input frequency increases, which of these are incorrect?

When applying miller's theorem to resistors, resistance R1 is for node 1 and R2 for node 2. If R1>R2, then for same circuit, then for capacitance for which the theorem is applied, which will be larger, C1 or C2?

If a C.E. stage has a load Rl and transconductance gm, what is the factor by which the capacitance between the base and the collector at the input side gets multiplied?

Which effect plays a critical role in producing changes in the frequency response of the B.J.T.?

During high frequency applications of a B.J.T., which parasitic capacitors arise between the base and the emitter?

During high frequency applications of a B.J.T., which parasitic capacitors arise between the collector and the emitter?

Which parasitic capacitors do not affect the frequency response of the C.E. stage, of the B.J.T.?

Which of the statement is incorrect?

In Miller's theorem, what is the constant K?

Which parasitic capacitors don't affect the frequency response of the C.C. stage of the B.J.T.?

If the total capacitance between the base and the emitter increases by a factor of 2, the transit frequency

Which of the following is true?

General representation of the frequency response curve is called

If a C.E. stage has a load Rl and transconductance gm, what is the factor by which the capacitance between the base and the collector at the output side gets multiplied?

Which parasitic capacitors don't affect the frequency response of the C.B. stage of the B.J.T.?

Bipolar Junction Transistors BJTS

BJT Stability and Biasing Techniques

Transistor Biasing and Circuit Analysis

Transistor Amplifier

Electrical Engineering Circuit Analysis

Electrical Engineering on Capacitance, Amplifiers, and Switching Regulators

Electronics and Power Supply

HVDC Transmission, DC Power Supplies, and Zener Diodes

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Exam 6: BJT Frequency Response and Capacitance Analysis

Which of the following is true?

Find net voltage gain, given hfe = 50 and hie = 1k?.

During high frequency applications of a B.J.T, which parasitic capacitors arise between the collector and the base?

Gain bandwidth frequency is GBP= 3000 Mhz. The cut-off frequency is f=10Mhz. What is the CE short circuit current gain at the ? cutoff frequency?

Under what condition can the circuit shown be called a compensated attenuator.

In an RC coupled CE amplifier, when the input frequency increases, which of these are incorrect?

When applying miller's theorem to resistors, resistance R1 is for node 1 and R2 for node 2. If R1>R2, then for same circuit, then for capacitance for which the theorem is applied, which will be larger, C1 or C2?

If a C.E. stage has a load Rl and transconductance gm, what is the factor by which the capacitance between the base and the collector at the input side gets multiplied?

Which effect plays a critical role in producing changes in the frequency response of the B.J.T.?

During high frequency applications of a B.J.T., which parasitic capacitors arise between the base and the emitter?

During high frequency applications of a B.J.T., which parasitic capacitors arise between the collector and the emitter?

Which parasitic capacitors do not affect the frequency response of the C.E. stage, of the B.J.T.?

Which of the statement is incorrect?

In Miller's theorem, what is the constant K?

Which parasitic capacitors don't affect the frequency response of the C.C. stage of the B.J.T.?

If the total capacitance between the base and the emitter increases by a factor of 2, the transit frequency

Which of the following is true?

General representation of the frequency response curve is called

If a C.E. stage has a load Rl and transconductance gm, what is the factor by which the capacitance between the base and the collector at the output side gets multiplied?

Which parasitic capacitors don't affect the frequency response of the C.B. stage of the B.J.T.?

Bipolar Junction Transistors BJTS

BJT Stability and Biasing Techniques

Transistor Biasing and Circuit Analysis

Transistor Amplifier

Electrical Engineering Circuit Analysis

Electrical Engineering on Capacitance, Amplifiers, and Switching Regulators

Electronics and Power Supply

HVDC Transmission, DC Power Supplies, and Zener Diodes

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