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Q1. | The Gaussian filter characteristic figure is realiza |

A. | TRUE [Wrong Answer] |

B. | FALSE [Correct Answer] |

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

⇒

**Assertion (A):** Strain measurement using strain gauge invariably requires a dummy strain gauge.

**Reason (R):** The resistance of strain gauge depends on temperature.

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

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

A is true R is false

A is false R is true

⇒ In a P type silicon sample, the hole concentration is 2.25 x 10

^{15}/ cm

^{3}. If the intrinsic carrier concentration is 1.5 x 10

^{10}/ cm

^{3}the electron concentration is

zero

10

^{10}/cm

^{3}

10

^{5}/cm

^{3}

1.5 x 10

^{25}/cm

^{3}

⇒ A communication channel disturbed by additive white, Gaussian noise has a bandwidth of 4 kHz and SNR of 15. The highest transmission rate that this channel can support (in k bits/sec) is

16

1.6

3.2

60

⇒ Which of the following best represents the bandwidth of an actual op-amp?

100 Hz to 1 MHz

0 Hz to 100 kHz

0 Hz to 10 MHz

0 Hz to infinity

⇒ In waveguides the existing waves are

TE only

TM only

both (a) and (b)

all of the above

⇒ A lossless transmission line with air dielectric is 6 m long. What is the line length at 30 MHz?

1 wavelength long

0.5 wavelength long

0.6 wavelength long

0.25 wavelength long

⇒ The main advantage of CC amplifier is

High input impedance and low output impedance

Low input impedance and high output impedance

High voltage gain

High current gain

⇒ A . 0 =

1

A

0

A or 1

⇒ When two 16-input multiplexers drive a 2-input MUX, what is the result?

2-input MUX

4-input MUX

16-input MUX

32 input MUX

⇒ A rectangular waveguide, in dominant TE mode, has dimensions 10

*cm*x 15

*cm*. The cut off frequency is

10 GH

*z*

1 GH

*z*

15 GH

*z*

25 GH

*z*

⇒ The speed at which axial electric field due to signal advances in a TWT is equal to

speed of light

(speed of light) (helix pitch helix circumference)

(speed of light) (helix circumference helix pitch)

(speed of light) (helix pitch) (helix circumference)

⇒ Potentiometer method of dc voltage measurement is more accurate than direct measurement using a voltmeter because

it loads the circuit to maximum extent

it loads the circuit moderately

it does not load the circuit at all

it uses centre zero galvanometer instead of Voltmeters

⇒ The first and second subscripts in models of circular waveguides depict

the number of full sine wave variations in circumference in direction and Bessel function variations in radial direction respectively

the Bessel function variations in radial direction and the number of full sine wave variations in circumference direction respectively

the Bessel function variations in circumference direction and number of full sine wave variations in radial direction respectively

none of the above

⇒ In a channel voice coder, the outputs of sixteen 20 Hz low pass filters are sampled, multiplexed and A/D converted. If sampling is at 40 samples/second and 3 bits/sample represents each voltage sample, the bit rate is about

1.9 k bits/sec

0.95 k bits/sec

3.8 k bits/sec

7.6 k bits/sec

⇒ CATV stands for

Common Antenna Television

Community Antenna Television

Cable Antenna Television

Channel Antenna Television

⇒ T- FF used as a

transfer Data switch

toggle switch

time delay switch

none

⇒ While keeping the down-link frequency constant, the diameter of a satellite antenna is reduced by half. To offer the same EIRP over the increased coverage area, the

*RF*output power has to be increases by a factor of

2

4

8

16

⇒ A current 10 sin (200

*t*) A flows through a 5 mH inductance. The expression for voltage is

10 sin (200

*t*+ 90°)

10 sin (200

*t*- 90°)

10 sin(1000

*t*+ 90°)

10 sin (1000

*t*- 90°)

⇒ If a number of even functions are added, the resultant sum is

even function

odd funtion

either even or odd function

mixture of odd amd even functions

⇒ A 200 turn coil has a self inductance of 10 mH. If the number of turns is doubled, all other quantities remaining the same, the self inductance will be

2.5 mH

5 mH

20 mH

40 mH

⇒ In a bridge inverter with single pulse width modulation

the output frequency is equal to frequency of reference signal

the output frequency is equal to frequency of control signal

either (a) or (b)

neither (a) nor (b)

⇒ A transistor with a = 0.9 and I

_{CBO}= 10 μA is biased so that I

_{BQ}= 90 μA. Then I

_{EQ}will be

5.15 mA

5.2 mA

5 mA

990 mA

⇒ The main advantage of CMOS circuit is

high gain

high output impedance

low power consumption

high gain and high output impedance

⇒ The parity bit is

always 1

always 0

1 or 0

none of the above

⇒ For an ideal noise free transistor amplifier the noise factor is

zero

zero dB

1 dB

depends on other factors

⇒ In most electric irons, the thermister used for controlling temperature is

vapour-filled bulb

high-expansion steel rod

bimetallic strip

thermopile

⇒ A dc amplifier can operate

at zero frequency

only at low frequency

only at high frequencies

both at low and high frequencies

⇒ Contents of RAM cannot be altered.

TRUE

FALSE

⇒ Induction wattmeter can be used in

ac circuit only

dc circuit only

both ac and dc circuit

ac 3 phase only

⇒ The enhancement type MOSFET is called a

normally on MOSFET

normally off MOSFET

P-type MOSFET

N-type MOSFET