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Assertion (A): A backward wave oscillator has an internal positive feedback. Reason (R): A positive feedback is necessary for sustained oscillations. | |
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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Successive approximation
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⇒ 11011 in gray code = __________ .
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⇒ The number of branches of root locus plot is equal to
the number of roots of characteristic equation
double the number of roots of characteristic equation
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⇒ A uniform wave have components
in the perpendicular direction E existing while H is zero
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metres
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ratio of two angles
⇒ Hollow waveguides are used as transmission lines at frequencies
above 1 GHz
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⇒ In standing wave pattern on a transmission line
voltage and current nodes coincide
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TRUE
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displacement
pressure
temperature
any of the above
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4
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all the three junctions are reverse biased.
one junction is reverse biased and two junctions are forward biased.
any of the above depending on the magnitude of reverse bias.
⇒ The output y(t) of a continuous-time system S for the input x(t) is given
S is linear and time-invariant
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1011
1101
1100
1110
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W/m^{2}
W-m
kWh/s
W/m
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voltage controlled oscillator
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power amplifier
operational amplifier
⇒ Find V_{x} V_{y} V_{zVx = -6 Vy = 3 Vz = -3Vx = -6 Vy = -3 Vz = 1Vx = 6 Vy = 3 Vz = 3Vx = 6 Vy = 1 Vz = 3}
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the forbidden energy gap in germanium is higher than that in silicon
the forbidden energy gap in germanium and silicon are equal
the forbidden energy gap in silicon is higher than that in germanium
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Waveguide dispersion
Material dispersion
Intermodal dispersion
Polarization mode dispersion
⇒ 1101_{2} - 1001_{2} =
1000
100
10
1
⇒ Which of the following is not correct for two phase servomotor?
Rotor diameter is small
Applied voltages are seldom balanced
Rotor resistance is low
Torque speed curve is linear
⇒ Which type of gate is in the given fig
NOR
OR
NAND
EX-OR
⇒ In a tape recorder the output from RF oscillator is given to
only erase head coil
only record head coil
coils of both erase head and record head
none of the above