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Q1. | The source of the harmonic distortion in a RC coupled transistor amplifier is usually |

A. | power supply [Wrong Answer] |

B. | capacitor [Wrong Answer] |

C. | R-C circuit [Wrong Answer] |

D. | transistor [Correct Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ For an RC admittance function Y,

Y(∞) < Y(0)

Y(0) < Y(∞)

Y (∞) may be lesser or greater than Y(0)

Y(∞) = Y(0)

⇒ Two current sources each of rms value 10 A have frequencies 40 Hz and 50 Hz respectively. They are connected in series, the expression for resultant wave is

*i*= 10 sin 40

*t*+ 10 sin 50

*t*

*i*= 14.14 sin 40

*t*+ 14.14 sin 50

*t*

*i*= 14.14 sin 80 p

*t*+ 14.14 sin 100 p

*t*

*i*= 20 sin 80 p

*t*+ 20 sin 100 p

*t*

⇒ What is the normal range of analog input voltage?

0 to 1 V

0 to 5 V

5 to 15 V

15V to 30V

⇒ Figure shows the variation of Z(ω) for a positive real function. The functio

RC impedance

RL impedance

RLC impedance

Reactance function

⇒ In a digital counter the number of flip-flops is

always 2

always even

always odd

equal to the number of bits required in the final binary count

⇒ A network is said to be non-linear if it does not satisfy

homogeneity condition

superposition condition

both (a) and (b)

associative condition

⇒ Which of the following can be accessed only sequentially?

Floppy disk

Hard disk

Magnetic tape

ROM

⇒

**Assertion (A):** Synchronous counter has higher speed of operation than ripple counter

**Reason (R):** Synchronous counter uses high speed flip flops.

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not correct explanation of A

A is true, R is false

A is false, R is true

⇒ The system with given pole-zero diagram is _______

Causal

Anti-causal

Both sided

Cannot be determined

⇒ A white noise

*X*(

*t*) with two-sided power spectral density 1 x 10

^{-10}W/Hz is input to a filter whose magnitude squared response is shown be

5 x 10

^{-7}W

1 x 10

^{-6}W

2 x 10

^{-6}W

5 x 10

^{-6}W

⇒ In a radio receiver, the local oscillator is always tuned to a frequency higher than the incoming frequency to

facilitate tracking

allow permit adequate frequency coverage without switching

facilitate image frequency rejection

all of the above

⇒ If ωε is the displacement current factor and s is conduction current density factor then which of the following statements is

*incorrect*?

For a lossless dielectric σ = 0

For an imperfect dielectric σ = 0

For a dielectric ωε >> σ

For a semiconductor ωε = σ

⇒ According to maximum power transfer theorem, the maximum power is absorbed by one network from another network when

the impedance of one of the networks is half that of the other

the impedance of one is the complex conjugate of the other

the impedance of one is equal to that of the other

none of the above

⇒ The relative permittivity of the ionosphere at ratio frequencies is

> 1

< 1

1

≥ 1

⇒ If

*x*

*is one sided to the ri*

^{k}TRUE

FALSE

⇒ Consider a Binary Symmetric Channel (BSC) with probability of error being

*p*. To transmit a bit, say 1, we transmit a sequence of three 1 s. The receiver will interpret the received sequence to represent 1 if at least two bits are 1. The probability that the transmitted bit will be received in error is

*p*

^{3}+ 3

*p*

^{2}(1 -

*p*)

*p*

^{3}

(1 -

*p*)

^{3}

*p*

^{3}+

*p*

^{2}(1 -

*p*)

⇒ In liquids charge carriers are electrons only.

TRUE

FALSE

⇒ In the circuit of figure, the waveshape of load current when thyristor conducting

constant

increasing exponentially

decreasing exponentially

either (b) or (c)

⇒ Efficiency of class A power amplifier is very poor.

TRUE

FALSE

⇒ Ground wave can be used for communication upto

5 kHz

12 kHz

16 kHz

25 kHz

⇒ Slotted line can be used for measurement of high frequencies

TRUE

FALSE

⇒ An 8085 microprocessor is operating at 2 MHz frequency and executes the following progr

12

13

14

15

⇒ In graphical analysis of BJT amplifier the slope of ac line is more than that of dc load line.

TRUE

FALSE

⇒ The filter circuit for feeding tweeter has

an inductance in series and a capacitance in parallel

a capacitance in series and an inductance in parallel

a resistance in series and a capacitance in parallel

a capacitance in series and a resistance in parallel

⇒ If a linear time invartant system is exicited by a pure random signal like white noise, the output of the linear system will have which of the following properties?

Output will be a white noise

Output will be periodic

Output will be random

Output will be correlated or coloured noise

⇒ S is closed for a long time and steady state is reached. S is opened at

*t*(0

^{-}). The voltage marked V is V

_{0}at

*t*= 0

^{+}and V

_{f}at

*t*= ∞. Then value of V

_{0}and V

_{f}are respecti

8, 8

0, 1

4, 0

4, 8

⇒ If

*f*is more than

*f*

_{unity}the gain of op-amp becomes less than 1.

TRUE

FALSE

⇒ For any test point

*s*on the real axis, the sum of angular contributions of the complex conjugate poles is

90°

180°

270°

360°

⇒ With a variable reluctance tachometer having 60 rotor teeth the count reads 3600 counts per minute. The speed in RPM is

36

60

360

3600

⇒ Consider the following statements as regards SAW filter

- The centre frequency is determined by the pitch of IDT comb shaped electrodes
- The response can be modified shaping the overlap of comb electrodes
- The response is maximum when acoustic wave has its wavelength equal to pitch
- When a number of identical electrodes are arranged at the same pitch, the frequency characteristics of the filter is expressed by (sin
*x*)/*x*

1, 2, 3, 4

1, 2, 3 only

1, 2, 4 only

2, 3, 4 only