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Q1. | Transistor are free from which type of noise? |

A. | Resistance noise [Wrong Answer] |

B. | Partition noise [Correct Answer] |

C. | Flicker noise [Wrong Answer] |

D. | Shot noise [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ If E

_{b}, the energy per bit of a binary digital signal is 10

^{-6}watt sec. and the one sided power spectral density of the white noise N

_{0}= 10

^{-5}W/Hz, then the output SNR of the matched filter is

26 dB

10 dB

20 dB

13 dB

⇒ Binary multiplication can be done by repeated addition.

TRUE

FALSE

⇒ The integral of a unit step function is

a unit impulse function

a unit pulse function

a ramp function of slope 1

none of the above

⇒ In a 4 input OR gate, the total number of High outputs for the 16 input states are

16

15

14

13

⇒ In the above case if the modulating frequency is increased to 20 kHz the bandwidth will be

0.05 MHz

1 MHz

2 MHz

4 MHz

⇒ Magnetic deflection is inversely proportional to

voltage

(voltage)

^{0.5}

(voltage)

^{1.5}

(voltage)

^{2}

⇒ If an amplifier with gain of - 100 and feedback of β = - 0.1 has a gain change of 20% due to temperature the change in gain of the feedback amplifier will be

0.0002

0.02

0.001

0.0001

⇒ Ferromagnetic materials

shows spontaneous magnetisation below a certain temperature

have resistivity very high as compared to that of iron

can be used even at microwave frequencies

all of the above

⇒ Filter method and phasing method are the methods for generating

SSB signal

vestigial side band signal

both SSB and vestigial sideband signals

none of the above

⇒ The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240 x 10

^{-6}N-m on full scale. If

*B*= 1 Wb/m

^{2}, range of meter is

1 mA

2 mA

3 mA

4 mA

⇒ Analysis of EM wave in waveguide based on

circuit theory

field theory

optical theory

both (a) and (b)

⇒ In the output of a DM speech encoder, the consecutive pulses are of opposite polarity during time interval

*t*

_{1}<

*t*<

*t*

_{2}. This indicates that during this interval

the input to the modulator is essentially constant

the modulator is going through slope overload

the accumulator is in saturation

the speech signal is being sampled at the Nyquist rate

⇒ The parallel RLC circuit shown in figure is in resonance

I

_{R}< 1 mA

| I

_{R}+ I

_{L}| > 1 mA

| I

_{R}+ I

_{L}| < 1 mA

| I

_{L}+ I

_{C}| > 1 mA

⇒ Which of the following uses 'transferred electron effect' for production of microwaves?

Silicon

Germanium

Metal-semiconductor junction

Gallium Arsenide

⇒ The distributors for residential areas are

single phase

three phase three wire

three phase 4 wire

(a) or (b)

⇒ At any point on the

*v*-

*i*characteristics of a semiconductor diode, the slope of

*v*-

*i*characteristics is called

resistance of diode

conductance of diode

incremental resistance of diode

incremental conductance of diode

⇒ For a = - 1, find the value of V

_{2∞0V1none of the above}

⇒ The analog signal given below is sampled at 1200 samples per second.

*m(t)*= 2 sin 120 p

*t*+ 3 sin 240 p

*t*+ 4 sin 360 p

*t*+ 5 sin 480 p

*t*+ 6 sin 600 p

*t*+ 7 sin 720 p

*t*. The folding (maximum) frequency is __________ .

300 H

*z*

360 H

*z*

600 H

*z*

480 H

*z*

⇒ 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 the case of the circuit shown in the figure, the collector current I

_{C}will be, if β = 100, V

_{BE}= 0.7 V, I

_{CO}= 0.1 βA at 20&d

2.26 mA

1.85 mA

0.357 mA

0.185 mA

⇒ Which of the following characters is allowed in variable names in C?

comma

dot

blank

underscore

⇒ Space communication links are being increasingly moved into Ka-band (200-30 GHz) because it

offers a much wider available bandwidth

does not suffer from atmospheric at tenuation

permits the use of smaller antenna

does not suffer from rain attenuation

⇒ In analog signal given below is sampled at such a rate that the samples of signal can be given to a collection of buffers having capacity of either 24 samples/sec. or 25 samples/sec. The sampling rate is minimum such that it fully utilizes the collection of both types of buffers

*m(t)*= 2 sin 480p

*t*+ 3 sin 720 p

*t<*

600 H

300 H

1200 H

2400 H

600 H

*z*300 H

*z*1200 H

*z*2400 H

*z*

⇒ An electron shell corresponding to principal quantum number

2

2

⇒ Consider the following statement S

⇒ The properties of FETs resemble closely to

UJT

current transformer

thyristor

thermionic valves

⇒ Schering bridge is used to measure

capacitance and dielectric loss

inductance

resistance

mutual inductance

⇒ To protect the diodes in a rectifier and capacitor input filter circuit it is necessary to use

surge resistor

surge inductor

surge capacitor

both (a) and (b)

⇒ If V

P = V

P = V

P = 3(V

P = 3(V

⇒ The forbidden energy gap for germanium is

0.12 eV

0.32 eV

0.72 eV

0.92 eV

⇒ An electron shell corresponding to principal quantum number

*n*can contain a maximum of*n*^{2}electrons2

*n*^{2}electrons2

*n*electron*n*^{3}electron⇒ Consider the following statement S

_{1}and S_{2S1 is False, S2 is trueS1 and S2 both are trueS1 and S2 both are falseS1 is true, S2 is false}⇒ The properties of FETs resemble closely to

UJT

current transformer

thyristor

thermionic valves

⇒ Schering bridge is used to measure

capacitance and dielectric loss

inductance

resistance

mutual inductance

⇒ To protect the diodes in a rectifier and capacitor input filter circuit it is necessary to use

surge resistor

surge inductor

surge capacitor

both (a) and (b)

⇒ If V

_{a0}, V_{a1}, V_{a2}are sequence components of V_{a}and I_{a0}, I_{a1}, I_{a2}are sequence components of I_{a}, then total 3 phase power P is given byP = V

_{a0}I_{a0}+ V_{a1}I_{a1}+ V_{a2}I_{a2}P = V

_{a0}I_{a0}+ V_{a1}I_{a1}+ V_{a2}I_{a2}^{*}P = 3(V

_{a0}I_{a0}+ V_{a1}I_{a1}+ V_{a2}I_{a2})P = 3(V

_{a0}I_{a0}+ V_{a1}I_{a1}+ V_{a2}I_{a2}^{*})⇒ The forbidden energy gap for germanium is

0.12 eV

0.32 eV

0.72 eV

0.92 eV