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Q1. | In a TV, studio the function of vision switcher is to |

A. | edit television programs [Correct Answer] |

B. | relay television programs [Wrong Answer] |

C. | control zoom lens [Wrong Answer] |

D. | mix audio and video signals [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 :**

⇒ In a thyristor the gate lead is connected to the

*n*layer near the

*p*layer to which anode is connected.

TRUE

FALSE

⇒ Calculate the conductivity of pure silicon at room temperature when the concentration of carriers is 1.6 x 10

^{10}per cm

^{3}. Take μ

_{e}= 1500 cm

^{2}/V-sec, μ

_{h}= 500 cm

^{2}/V-sec at room temperature,

5.12 x 10

^{-16}

5 x 10

^{+16}

10

^{16}

5 x 10

^{20}

⇒ For a particular type of memory the access time and cycle time are 200 ns each. The maximum rate at which data can be accessed by

2.5 x 10

^{6}/s

5 x 10

^{6}/s

0.2 x l0

^{6}/s

10

^{6}/s

⇒ With which decoder it is possible to obtain many code conversions?

2 line to 4 line

3 line to 8 line

not possible with any decoder

4 line to 16 line decoder

⇒ A minimum function has

poles and zeros on imaginary axis of

*s*plane

no poles or zeros on imaginary axis of

*s*plane

only poles but no zeros on imaginary axis of

*s*plane

only zeros but no poles on imaginary axis of

*s*plane

⇒ The characteristics of a non-linear resistance is

*i*=

*kv*

^{4}. If

*i*becomes 100 times,

*v*becomes

about 100 times

about 10 times

about 3 times

about twice

⇒ The process of entering data into ROM is called

writing

burning

decoding

registering

⇒ M circles are symmetrical with respect to

real and imaginary axis

M = 1 straight line and real axis

M = 1 straight line and imaginary axis

M = 1 straight line

⇒ To evaluate X = (A + B + 1.2) * (A + B - C) the sequence of operation is

+ + + - * =

* + + + - =

+ + - * + =

- + + + * =

⇒ For type 2 system, the magnitude and phase angle of the term (

*j*ω)

^{2}in the denominator, at ω = 0, are respectively

0 and - 90°

0 and + 90°

infinity and - 180°

infinity and + 180°

⇒ For measurement of surface temperature of solids the elements of RTD is usually in the shape of

bar

coil

flat grid

either (a) or (b)

⇒ In the given circuit, the switch is open for a long time. At time

*t*= 0, the switch is closed. What are the initial and final values of voltages across the induc

0 V and 0 V

0 V and 80 V

80 V and 0 V

80 V and 80 V

⇒ In amplifiers, the parasitic oscillation result due to

transistor inter junction capacitance

push pull operator

negative feedback

poor inter-stage coupling

⇒ A 4 bit binary adder has 4 full adders.

TRUE

FALSE

⇒ An R-C coupled amplifier has mid-frequency gain of 200 and a frequency response from 100 Hz to 20 kHz. A negative feedback network with β = 0.2 is incorporated into the amplifier circuit, the Bandwidth will be

50 kHz

20 kHz

100 kHz

infinite

⇒ Which one of the following is true?

Alternating voltage and current contain odd and even harmonics

The inductance in a circuit reduces the effect of harmonics and makes current wave more sinusoidal than voltage wave

Alternating voltage and current waveforms, in general, do not contain odd harmonics

Inductance of a circuit does not alter wave shape at all

⇒ A channel has a SNR of 7 and BW 4 kHz. Keeping the channel capacity (BPS) same, the BW is reduced to accommodate more channels. The SNR

decreases

increases

remains same

partially affected

⇒

**Assertion (A):** Capacitance of a solid conducting spherical body of radius '*a*' is given by 4 pε_{0}*a* in free space.

**Reason (R):** Δ x H = *j*ωεE + J.

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

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

A is true but R is false

A is false but R is true

⇒ The Nyquist plot of a stable, transfer function

*G*(

*s*) is shown in the figure. We are interested in the stability of the closed loop system in the feedback configuration sh

6 dB and 180°

3 dB and 180°

6 dB and 90°

3 dB and 90°

⇒ In a backward wave oscillator the wave

travelling along the line winds itself back and forth

progresses only in forward direction

progresses only in backward direction

either (a) or (c)

⇒ The phase angle characteristic in the given figure is

all pass function

transport lag

minimum phase function

none of the above

⇒ A fully controlled bridge converter can operate in quadrants

1

1 and 2

1 and 3

1 and 4

⇒ A 0-200 V voltmeter has an accuracy of 0.75% of full scale reading. If voltage measured is 100 V, the error is

0.03

0.02

0.015

0.0075

⇒ In a combination limiter with sinusoidal input voltage the output wave can be nearly square.

TRUE

FALSE

⇒ Class A amplifiers are preferred when

minimum distortion is required

maximum voltage gain is required

output signal is desired in phase with input signal

signal having A.C. superimposed on D.C. are to be amplified

⇒ If the radiated power of AM transmitter is 10 kW, the power in the carrier for modulation index of 0.6 is nearly.

8.24 kW

8.47 kW

9.26 kW

9.6 kW

⇒ The use of coaxial microwave line should be restricted to frequencies

below cut off frequency of TE

_{11}mode

above cut off frequency of TE

_{11}mode

at frequencies much lower than cut off frequency of TE

_{11}mode

at frequencies much higher than cut off frequency of TE

_{11}mode

⇒

Match the following:

List I (Bits operator in C) | List II (Meaning) | ||
---|---|---|---|

A. | ˜ | 1. | Bitwise XOR |

B. | & | 2. | Bitwise AND |

C. | | | 3. | Bitwise OR |

D. | U | 4. | One's complement |

A-1, B-2, C-3, D-4

A-4, B-3, C-2, D-1

A-2, B-3, C-1, D-4

A-4, B-2, C-3, D-1

⇒ What is the propagation constant for air filled wave guide with dimensions

*a*= 1.59" and

*b*= 0.795" at 4.95 GHz. The wave impedance is

400.94 Ω

562.94 Ω

502.80 Ω

492.80 Ω

⇒ In some on-off controllers a differential gap is provided

to make the manufacture process easier

to prevent too often frequent operation of controller

both (a) and (b)

neither (a) nor (b)