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Assertion (A): In TV scanning is done from left to right and top to bottom. Reason (R): Interlaced scanning is useful in eliminating flicker | |
A. | Both A and R are correct and R is correct explanation of A [Wrong Answer] |
B. | Both A and R are correct but R is not correct explanation of A [Correct Answer] |
C. | A is correct but R is wrong [Wrong Answer] |
D. | A is wrong but R is correct [Wrong 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 :
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4
⇒ The rating of a transformer to deliver 100 watts of D.C. power to a load under half wave rectifier will be nearly
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2
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⇒ The rating of a transformer to deliver 100 watts of D.C. power to a load under half wave rectifier will be nearly
1 kVA
350 VA
175 VA
108 VA
⇒ The earliest uses of electromagnetic waves were
point to point communication
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both (a) and (b)
neither (a) nor (b)
⇒ In a bipolar transistor the barrier potential
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⇒ Which of the following microphones has maximum distortion?
Ribbon
Condenser
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Carbon
⇒ In an FM signal, the power
increases as the modulation index increases
reduces as the modulation index increase
increases as the modulation index decreases
remains constant when the modulation index increases
⇒ In order to enable RST 5.5, RST 6.5 and RST 7.5 interrupts, which of the following instructions are needed?
El only
SIM only
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None
⇒ ADC 0804 is a
dual slope A/D converter
single slope A/D converter
successive approximation A/D converter
either (a) or (b)
⇒ The resistance values of a PIN diode under positive bias and negative bias respectively are about
a few ohms and a kilo ohms
about 100 ohms and 1000 ohms
about 0.1 ohm and 100 ohms
about 1000 ohms and 10000 ohms
⇒ The 2's complement representation of - 17 is
1110
1111
11110
10001
⇒ A 50 Hz current has an amplitude of 10 A. The rate of change of current at t = 0.005 after i = 0 and is increasing is
2221.44 A/s
0
- 2221.44 A/s
- 3141.6 A/s
⇒ In a CE amplifier the output coupling capacitor is short circuited. The dc collector voltage
will increase
may increase or decrease
will remain the same
will decrease
⇒ A generator with an internal resistance of 600 Ω drives an amplifier whose input resistance is 400 Ω. The generator's open circuit voltages is 1 mV; the amplifier develops 100mV across an 8kΩ load. The input voltage to the amplifier is
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0.4 m V
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⇒ The gain of collinear arrays is maximum when the spacing between the elements is
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0.3 λ to 0.9 λ
0.5 λ to 0.7 λ
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1 kilowatt-sec
1 kilowatt-hour
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⇒ In major diatonic musical scale, an octave is divided into
12 intervals
10 intervals
7 intervals
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⇒ For a stable system having two or more gain crossover frequencies the phase margin is measured at the highest crossover frequency.
TRUE
FALSE
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FFFF
3FFF
5FFF
⇒ An impulse train is
a number of pulses
a number of pulses spaced from each other
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none of the above
⇒ For real and odd signals, the Fourier series coefficient a_{n} is
purely imaginary
purely real and even
purely imaginary and odd
purely real and odd
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RAL
instructiononce
twice
thrice
four times
⇒ The distance between maxima and minima of a standing wave is
λ/4
λ/2
λ
2λ
⇒ A MOSFET has a threshold voltage of 1 V and oxide thickness of 500 x 10^{-8} [ε_{r} = 3.9; ε_{0} = 8.85 x 10^{-14} F/cm, q = 1.6 x 10^{-19} c]. The region under the gate is ion implanted for threshold voltage tailoring. The base and type of impant required to shift threshold voltage to - 1 V are __________ .
8.6 x 10^{11}/cm^{2}, p-type
8.6 x 10^{11}/cm^{2}, n-type
0.86 x 10^{9}/cm^{2}, p-type
1.02 x 10^{12}/cm^{2}, n-type
⇒ A semiconductor Read-only-Memory basically is
a combinational logic circuit
a set of flip-flop memory elements
a sequential circuit with flip-flops and gates
none of the above
⇒ The kinetic energy of photoelectrons emitted by a photo sensitive surface depends on
intensity of the incident radiation
wavelength of the incident radiation
surface conditions of the surface
angle of incidence of radiation
⇒ If 137 + 276 = 435 how much is 731 + 672?
534
1403
1623
1513
⇒ A series resonant circuit has inductance L. If L is increased, the resonant frequency
increases
decreases
remains constant
may increases or decreases
⇒ For a Hertz dipole antenna, the Half Power Beam Width (HPBW) in the E-plane is
360°
180°
90°
45°
⇒ A blank EPROM has
all bits set to logical 0
all bits set to logical 1
half the total number of bits set to 0 and remaining half to logical 1
either (a) or (b)