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Q1. | A trinitron colour picture tube uses |

A. | three electron guns [Wrong Answer] |

B. | one electron gun [Wrong Answer] |

C. | one electron gun with three separate in line cathodes [Correct Answer] |

D. | none of the above [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 :**

⇒ A single turn loop is situated in air, with a uniform magnetic field normal to its plane. The area of the loop is 5 m

^{2}and the rate of change of flux density is 2 Wb/m

^{2}/s. What is the emf appearing at the terminals of the loop?

-5 V

-2 V

-0.4 V

0 V

⇒ The modulation index of an AM wave is measured using a CRO. The waveform is as shown in figure, the modulation index is nea

0.43

0.3

0.23

0.17

⇒ If the value of C

_{2}and C

_{3}are doubled, the oscillation frequency will be

quadrupled

doubled

unchanged

halved

⇒ Transistor T

_{1}operates at 30 kHz and T

_{2}operates at 300 Hz. The flicker noise is

not depend on frequency

T

_{1}> T

_{2}

T

_{1}= T

_{2}

T

_{1}< T

_{2}

⇒ 1's complement of 11100110 is

11001

10000001

11010

0

⇒ When a current source I is suddenly connected across a two terminal relaxed RC circuit at time

*t*= 0, the voltage across the current source is shown in figure. The RC circui

a series combination of R and C

a parallel combination of R and C

a series combination of R and parallel combination of R and C

a pure capacitor

⇒ Which one of the following is

*not*LED material?

GaAs

GaP

SiC

SiO

_{2}

⇒ The holes diffuse from P-region to the N-region in a P-N junction diode because

there is greater concentration of holes in the P-region as compared to N-region

there is greater concentration of holes in the N-region as compared to P-region

the free electrons in the N-region attract them

potential difference facilities such transfer

⇒ In figure, I

_{D}= 4 mA. Then V

_{DS20 V16 V4 V0.4 V}

⇒ In disc mounting of SCR

SCR is clamped on one side of disc shaped heat sink

SCR is clamped between two disc shaped heat sinks

The SCR has low current rating

None of the above

⇒ In a Karnaugh map for an expression having 'don't care terms' the don't cares can be treated as

0

1

1 or 0

none of the above

⇒ A 5000 W signal is attenuated by - 196 dB. The resultant signal strength is

1.26 x 10

^{6}W

1.26 x 10

^{-2}W

1.26 x 10

^{-8}W

1.26 x 10

^{-16}W

⇒ In a R-L-C circuit at resonance is

maximum in series resonance and minimum in parallel resonance.

maximum in parallel resonance and minimum in series resonance

minimum in both series and parallel resonances

maximum in both series and parallel resonances.

⇒ Out of the three transforms viz. Z-transform, Laplace transform and Fourier transform

all three are used in continuous time domain

all three are used in both continuous time domain and discrete time domain

Z transform is used in continuous time domain while Laplace and Fourier transforms are used in discrete time domain

Z transform is used is discrete time domain while Laplace and Fourier transforms are used in continuous time domain

⇒ With on-chip decoding,

*n*address lines can access

2

*n*memory locations

2

*n*

^{2}memory locations

2

*memory locations*

^{n}*n*

^{2}memory location

⇒ Generally, the gain of a transistor amplifier falls at high frequency due to the

internal capacitance of the device

coupling capacitor at the I/P

skin effect

coupling capacitor at the O/P

⇒ Consider the following functions

- It detects the AM video carrier IF so as to produce the video signal
- It produces and separates out the inter carrier sound IF of 5.5 MHz
- It amplifies the video signal
- It amplifies the audio signal

1, 2 and 3

1, 2, 3 and 4

1 and 2

1, 2 and 4

⇒ The amplitude of a pair of composite sinusoidal signal

*y*(

*n*) =

*x*

_{1}(

*n*) +

*x*

_{2}(

*n*) with

*x*

_{1}(

*n*) = sin (5p

*n*)

*x*

_{2}(

*n*) = 3 sin (5p

*n*) is __________ .

2

3

4

1

⇒ In a colour TV receiver, PAL Dematrix consists of

chroma detector to separate the three primary colours

delay line and PAL matrix to give U and V signals

delay line and PAL matrix to give RGB colours

none of the above

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

16

8

4

1

⇒ In an AM transmitter after the modulation stage, class C amplifier

can be used

cannot be used

may be used, but it has no use

can't be determine to use

⇒ RC network shown in the given figure can provide a maximum theoretical phase shif

90°

180°

270°

360°

⇒ In a CB amplifier the maximum efficiency could be

0.99

0.85

0.5

0.25

⇒ Surface impedance at high frequencies is a consideration for

good conductors

semiconductors

dielectrics

ferrites

⇒ A bipolar transistor is a __________ controlled devices whereas a FET is a __________ controlled devices.

current, voltage

current, current

voltage, current

voltage, voltage

⇒ The baud rate is

not equal to signalling rate

always equal to bit transfer rate

equal to twice the bandwidth of an ideal channel

equal to half the bandwidth of ideal channel

⇒ 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

⇒ A resistance of 5 ohms is connected in one branch of a network. The current in this branch is 2.2. A. If the resistance is increased to 7.5 Ω, the remaining circuit being the same, the current in this branch will be

2.2 A

less than 2.2 A

2.2 A or less than 2.2 A

2.2 A or less or more than 2.2 A

⇒ Voltage V

_{L}in the circuit when V

_{s}< 0 where D is an ideal diode. (Take R

_{1}= R

_{s}= R

_{L}= 1 &o

0

1

1.5

cannot find

⇒ The expression Y (A, B, C) = ∑m (1, 3, 5, 6) is to realized using a multiplexer. Then

use 8 : 1 multiplexer and ground input lines 1, 3, 5, 6

use 8 : 1 multiplexer and ground input lines 0, 2, 4, 7

use 8 : 1 multiplexer and ground input lines 0, 1, 2, 3

use 8 : 1 multiplexer and ground input lines 4, 5, 6, 7