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In colour TV system the colour sub carrier frequency is 4.43 MHz. | |
A. | TRUE [Wrong Answer] |
B. | FALSE [Correct Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ The image frequency of a superheterodyne receiver is
independent of the frequency at which the receiver is tuned
always outside the operating range of the receiver
typical to FM receivers only
not rejected by the IF tuned circuits
⇒ Which amplifier has a voltage gain of less than 1?
Common emitter
Common collector
Common base
Both CB and CC
⇒ Ground wave propagation is useful for
microwave
medium wave
short wave
long distance
⇒ For the binary number 11101000, the equivalent hexadecimal number is
F 9
F 8
E 9
E 8
⇒ The product of which of the following gives the figure of merit of a logic family?
Gain and bandwidth
Propagation delay time and power dissipation
Fan-out and propagation delay time
Noise margin and power dissipation
⇒ Consider the following BJT circ
2.46 kΩ
2.88 kΩ
200 Ω
18.48 Ω
⇒ The recently-introduces CD-ROM PC by Head Start Technologies Co. of New York enables users to view or play __________ .
vast amounts of text
graphics
music
all of the above
⇒ - ve feedback in an amplifier
reduces gain
increase frequency and phase distortion
reduce bandwidth
increase noise
⇒ The poles and zeros of a positive real function
may lie any where in s plane
may have positive or negative real part
must occur in conjugate pair
must have either negative or zero real part
⇒
Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is true, R is false
A is false, R is true
⇒ A perfect conductor is a perfect absorber of electromagnetic waves.
TRUE
FALSE
⇒ If ROC of x[n] is R_{1} then ROC of a^{n} x[n] is
R_{1}a
R_{1}/a
a/R_{1}
R_{1} + a
⇒ For AB + A C + BC = AB + A C the dual form is
(A + B) (A + C)(B + C) = (A + B)(A + C)
(A + B ) (A + C)(B + C) = (A + B)(A + C)
(A + B) (A + C) (B + C) = (A + B) (A + C)
none of the above
⇒ The wavelength of light emitted by GaAs laser is 8670 x 10^{-10} m. If h = 6.626 x 10^{-34} Js, velocity of light = 3 x 10^{8} m/s and eV = 1.602 x 10^{-19} J, the energy gap in GaAs is
0.18 eV
0.7 eV
1.43 eV
2.39 eV
⇒
A-1, B-2, C-3
A-2, B-3, C-1
A-3, B-1, C-2
A-1, B-3, C-2
⇒ For the circuit, let us assume that R = 1 Ω, L = 10^{-3} H, and V(t) = 10 cos (1000t + 30°)V and the differential equation for I(t) is give
7.07 cos (1000t + 15°) A
70.7 cos (1000t - 30°) A
7.07 cos (1000t - 15°) A
7.07 cos (1000t + 15°) A
⇒
A-3, B-2, C-1, D-4
A-1, B-4, C-2, D-3
A-3, B-4, C-1, D-2
A-2, B-3, C-4, D-1
⇒ In a composite filter terminating half sections are used for impedance matching.
TRUE
FALSE
⇒ The intermediate frequency of a superheterodyne receiver is 450 kHz. If it is tuned to 1200 kHz, the image frequency will be
750 kHz
900 kHz
1600 kHz
2100 kHz
⇒ A video transmission system transmits 625 picture frames per second. Each frame consist of a 400 x 400 pixel grid with 64 intensity levels per pixel. The data rate of the system is
16 Mbps
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⇒ If the number of atoms per unit volume of a monoatomic gas changes, the dielectric constant still remains constant.
TRUE
FALSE
⇒ Consider the following types of distortions in diode detectors
1, 2 and 3
1 and 2
1 and 3
2 and 3
⇒ Depth of penetration does not depend on frequency.
TRUE
FALSE
⇒ Refraction of electromagnetic waves occurs when they
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pass into a medium of different dielectric constant
are polarized at right angles to the direction of propagation
encounter a perfectly conduction surface
⇒ Which device has one input and many outputs?
Multiplexer
Demultiplexer
Counter
Flip flop
⇒
A-1, B-2, C-3
A-3, B-1, C-2
A-2, B-3, C-1
A-3, B-2, C-1
⇒ A binary ladder network D/A converter requires
resistors of one value only
resistors of many different values
resistors of two different values
none of the above
⇒ If figure, I = 2A if R = 20 Ω. When R = 10 Ω current I
0.0416666666666667
0.0833333333333333
2.5 A
0.125
⇒ A high resistance was measured by loss of charge method. The voltmeter resistance was 10^{10} ohms. The calculation gave the value of unknown resistance as 0.8 x 10^{9} ohms. The true value of resistance is
0.8 x 10^{9} Ω
less than 0.8 x 10^{9} Ω
more than 0.8 x 10^{9} Ω
either (b) or (c)
⇒ If a sequence is causal then ROC is (where a is any number)
|z| > a
|z| < a
|z| = a
Entire Plane
⇒ The image frequency of a superheterodyne receiver is
independent of the frequency at which the receiver is tuned
always outside the operating range of the receiver
typical to FM receivers only
not rejected by the IF tuned circuits
⇒ Which amplifier has a voltage gain of less than 1?
Common emitter
Common collector
Common base
Both CB and CC
⇒ Ground wave propagation is useful for
microwave
medium wave
short wave
long distance
⇒ For the binary number 11101000, the equivalent hexadecimal number is
F 9
F 8
E 9
E 8
⇒ The product of which of the following gives the figure of merit of a logic family?
Gain and bandwidth
Propagation delay time and power dissipation
Fan-out and propagation delay time
Noise margin and power dissipation
⇒ Consider the following BJT circ
2.46 kΩ
2.88 kΩ
200 Ω
18.48 Ω
⇒ The recently-introduces CD-ROM PC by Head Start Technologies Co. of New York enables users to view or play __________ .
vast amounts of text
graphics
music
all of the above
⇒ - ve feedback in an amplifier
reduces gain
increase frequency and phase distortion
reduce bandwidth
increase noise
⇒ The poles and zeros of a positive real function
may lie any where in s plane
may have positive or negative real part
must occur in conjugate pair
must have either negative or zero real part
⇒
Assertion (A): The resolution of a DAC depends on the number of bits
Reason (R): Low resolution leads to fine control.
Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is true, R is false
A is false, R is true
⇒ A perfect conductor is a perfect absorber of electromagnetic waves.
TRUE
FALSE
⇒ If ROC of x[n] is R_{1} then ROC of a^{n} x[n] is
R_{1}a
R_{1}/a
a/R_{1}
R_{1} + a
⇒ For AB + A C + BC = AB + A C the dual form is
(A + B) (A + C)(B + C) = (A + B)(A + C)
(A + B ) (A + C)(B + C) = (A + B)(A + C)
(A + B) (A + C) (B + C) = (A + B) (A + C)
none of the above
⇒ The wavelength of light emitted by GaAs laser is 8670 x 10^{-10} m. If h = 6.626 x 10^{-34} Js, velocity of light = 3 x 10^{8} m/s and eV = 1.602 x 10^{-19} J, the energy gap in GaAs is
0.18 eV
0.7 eV
1.43 eV
2.39 eV
⇒
Match the following:
List I (Location of characteristics roots) | List II (System characteristic) | ||
---|---|---|---|
A. | (- 1 + j), (- 1 - j) | 1. | Marginally stable |
B. | (- 2 + j), (- 2 - j), (2, j) (- 2, j) | 2. | Unstable |
C. | - j, j - 1, 1 | 3. | Stable |
A-1, B-2, C-3
A-2, B-3, C-1
A-3, B-1, C-2
A-1, B-3, C-2
⇒ For the circuit, let us assume that R = 1 Ω, L = 10^{-3} H, and V(t) = 10 cos (1000t + 30°)V and the differential equation for I(t) is give
7.07 cos (1000t + 15°) A
70.7 cos (1000t - 30°) A
7.07 cos (1000t - 15°) A
7.07 cos (1000t + 15°) A
⇒
Match the following:
List I (Instrument) | List II (Measured quantity) | ||
---|---|---|---|
A. | Hot wire | 1. | only voltage |
B. | PMMC | 2. | phase |
C. | Electrostatic | 3. | true RMS value |
D. | Lock in Amplifier | 4. | dc value |
A-3, B-2, C-1, D-4
A-1, B-4, C-2, D-3
A-3, B-4, C-1, D-2
A-2, B-3, C-4, D-1
⇒ In a composite filter terminating half sections are used for impedance matching.
TRUE
FALSE
⇒ The intermediate frequency of a superheterodyne receiver is 450 kHz. If it is tuned to 1200 kHz, the image frequency will be
750 kHz
900 kHz
1600 kHz
2100 kHz
⇒ A video transmission system transmits 625 picture frames per second. Each frame consist of a 400 x 400 pixel grid with 64 intensity levels per pixel. The data rate of the system is
16 Mbps
100 Mbps
600 Mbps
6.4 Gbps
⇒ If the number of atoms per unit volume of a monoatomic gas changes, the dielectric constant still remains constant.
TRUE
FALSE
⇒ Consider the following types of distortions in diode detectors
- Distortion is caused due to the reason that dc and ac load impedances are unequal
- Distortion is caused because ac load impedance has a reactive component at high audio frequencies
- Audio frequency diode current is less than dc current
1, 2 and 3
1 and 2
1 and 3
2 and 3
⇒ Depth of penetration does not depend on frequency.
TRUE
FALSE
⇒ Refraction of electromagnetic waves occurs when they
pass through a small slot in a conducting plane
pass into a medium of different dielectric constant
are polarized at right angles to the direction of propagation
encounter a perfectly conduction surface
⇒ Which device has one input and many outputs?
Multiplexer
Demultiplexer
Counter
Flip flop
⇒
Match the following:
List I (Command in WORD) | List II (Meaning) | ||
---|---|---|---|
A. | END | 1. | The bar displays the current position of cursor |
B. | HOME | 2. | Moves cursor to the beginning of current line |
C. | Status | 3. | Moves cursor to end of document |
A-1, B-2, C-3
A-3, B-1, C-2
A-2, B-3, C-1
A-3, B-2, C-1
⇒ A binary ladder network D/A converter requires
resistors of one value only
resistors of many different values
resistors of two different values
none of the above
⇒ If figure, I = 2A if R = 20 Ω. When R = 10 Ω current I
0.0416666666666667
0.0833333333333333
2.5 A
0.125
⇒ A high resistance was measured by loss of charge method. The voltmeter resistance was 10^{10} ohms. The calculation gave the value of unknown resistance as 0.8 x 10^{9} ohms. The true value of resistance is
0.8 x 10^{9} Ω
less than 0.8 x 10^{9} Ω
more than 0.8 x 10^{9} Ω
either (b) or (c)
⇒ If a sequence is causal then ROC is (where a is any number)
|z| > a
|z| < a
|z| = a
Entire Plane