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Q1. | In a TV receiver the video IF amplifier provides a gain of about |

A. | 5 dB [Wrong Answer] |

B. | 20 dB [Wrong Answer] |

C. | 60 dB [Correct Answer] |

D. | 200 dB [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss 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 :**

⇒ The open collector gates in the given figure are tied together. The output

A + B + C + D

A + B + C + D

(A + B) (C + D)

AB + CD

⇒ The line of sight communication requires the transmit and receive antennas to face each other. If the transmit antenna is vertically polarized, for best reception to the receive antenna should be

horizontally polarized

vertically polarized

at 45° within respect to horizontal polarization

at 45° with respect to vertical polarization

⇒ The core of a solenoid is made of material of relative permeability μ

_{r}. A small cavity area

*d*A and length

*dl*is cut in the core. If it is desired that flux density in the cavity should be equal to B

_{0}

the fields inside and outside the cavity must be equal

the field inside the cavity must be made stronger than field outside the cavity

the field inside the cavity must be made weaker than the field outside the cavity

none of the above

⇒ If

*p*is the probability of success and

*q*is the probability of failure, then the probability that there are

*r*successes in

*n*trails is

^{n}

*c*

_{r}

*p*

^{r}*q*

^{n}

^{-}

^{r}

^{n}*c*

_{r}

*p*

^{n -}

^{r}*q*

^{r}^{n}

*c*

_{r}

*p*

^{r}*q*

^{n}

^{+}

^{r}

^{n}*c*

_{r}*p*

^{n}*q*

^{n}^{- r}

⇒ The value of the integral of the function g(

*x, y*) = 4

*x*

^{3}+ 10

*y*

^{4}along the straight line segment from the point (0, 0) to the point (1, 2) in the x-y plane is

33

35

40

56

⇒ In a low power factor wattmeter, the resistance of pressure coil is more than in ordinary wattmeter.

TRUE

FALSE

⇒ The system in the given figur

type 0 system

type 1 system

type 2 system

type 3 system

⇒ In a BJT CE amplifier circuit the value of coupling capacitor should be such that

its reactance is small for the lowest frequency in the input and output

its reactance is high for the lowest frequency in the input and output

its reactance is zero for the lowest frequency in the input and output

its reactance is infinite for the lowest frequency in the input and output

⇒ The peak factor is

rms value/peak value

rms value/average value

peak value/rms value

peak to peak value/rms value

⇒ TTL logic is preferred to DRL logic because

greater fan-out is possible

greater logic levels are possible

greater fan-in is possible

less power consumption is achieve

⇒ An ac voltage 20 sin 1000

*t*feeds an R-C series circuit. R = 8 Ω and active power is 4 W. The power factor is

1

0.8

0.6

0.4

⇒ The reverse saturation current depends on the reverse bias.

TRUE

FALSE

⇒ In binomial arrays the elimination of secondary lobes takes place

at the cost of directivity

at the cost of gain

both (a) and (b)

none of the above

⇒ A 16 x 8 ROM stores these words in its first four locations, as given below. Which of this represents 3 CH in hexadecimal?

R

_{0}= 1110 0010

R

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R

_{2}= 0011 1100

R

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⇒ Consider the following program for 8085

`OACH`

`53 H`

`OADH`

`54 H`

⇒ At a given probability of error, binary coherent FSK is interior to binary coherent PSK by

6 dB

3 dB

2 dB

0 dB

⇒ To select one out of N equally probable events, the number of bits required is

log

_{2}N

log

_{10}N

log

_{e}N

N

⇒ A single phase full converter gives maximum and minimum output voltage at firing angles of

0 and 180° respectively

180° and 0° respectively

0 and 90° respectively

90° and 0° respectively

⇒

`LPEPSI`

3

9

13

23

⇒ The ratio of impurity atoms to intrinsic semiconductor atoms in an extrinsic semiconductor is about.

0.0486111111111111

0.736111111111111

1 : 100000

1 : 10^{8}

⇒ In figure, the switch is closed at *t* = 0. At *t* = 0^{+}, *di*/*dt* = 4 A/s. Then

10 V

20 V

40 V

80 V

⇒ An RC impadence function has a pole at *s* = 0. The first element in the Foster form of synthesis

is R

may be R and C

is C

is R and C in parallel

⇒ Good smoothing factor of a coil depends on

inductance of the coil

terminal voltage

cross-sectional area of the wire of the coil

property of the wire of the coil

⇒ A circular waveguide has an infinite set of TE and TM modes.

TRUE

FALSE

⇒ **Assertion (A):** In a parallel circuit having two branches, each branch current may be more than source current.

**Reason (R):** Calculations in ac circuits use rules of complex algebra.

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

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

A is true but R is false

A is false but R is true

⇒ The scale of moving iron instrument is linear.

TRUE

FALSE

⇒ The internal impedance of a source is 3 + *j* 4 Ω. It is desired to supply maximum power to a resistive load. The load resistance should be

3 Ω

4 Ω

7 Ω

5 Ω

⇒ The units of thermal capacitance are

k cal/°C

°C/k cal

°C sec/k cal

none of the above

⇒ The first geostationary satellite was named

Intelsat I

Intelsat II

Intelsat III

Early bird

⇒ Consider the following statements - Thermistor is more sensitive than platinum resistance thermometer
- The resistance of thermistor is solely a function of its absolute temperature whether the source of heat is external or internal
- Thermistor has linear temperature-resistance relationship
- Thermistor has linear negative temperature coefficient

Of the Statements, the correct statements are

1 and 2

3 and 4

1, 2, 3, 4

1, 2 and 4

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