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Trap circuits used in video IF amplifier of colour TV are | |
A. | High Q, LC resonant circuit [Correct Answer] |
B. | Low Q, LC resonant circuit [Wrong Answer] |
C. | High Q, RLC resonant circuit [Wrong Answer] |
D. | Low Q, RLC resonant circuit [Wrong Answer] |
View Answer
Explanation:-
Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ Under identical conditions, for a single modulating frequency, FM and PM are indistinguishable. Now if the modulating frequency is reduced, then
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⇒ Under identical conditions, for a single modulating frequency, FM and PM are indistinguishable. Now if the modulating frequency is reduced, then
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phase modulation index as well as frequency modulation index increase
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phase modulation index will decrease whereas frequency modulation index will remain constant
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1800 revolutions
2100 revolutions
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absorbed by F_{2} layer
affected by solar cycle
reflected by D layer
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⇒ The frame of electric motor is connected to three plates having earthing resistance of 10 Ω, 20 Ω and 30 Ω respectively. The materials of the three plates are copper, aluminium and iron respectively. The percentage of energy dissipated by 10 Ω earthing plate
is more than 50% of total energy
is less than 50% of total energy
depends on the materials of the three plates
may be more or less than 50% of total energy
⇒ An electron (charge -e) is rotating in a circular orbit of radius R, around a proton with charge +e at a constant angular velocity ω. The orbital magnetic dipole moment is
0.5 eω R^{2}
eω R^{2}
2 eω R^{2}
0.5 eω R^{3}
⇒ How many interrupts are there in 8085 microprocessor?
4
5
6
8
⇒ In a one pole active low pass filter, the cut off frequency is f_{c}. Then
gain decreases at the rate of 20 dB per decade increase in frequency above f_{c}
gain decreases at the rate of 20 dB per decade decrease in frequency below f_{c}
gain decreases at the rate of 40 dB per decade increase in frequency above f_{c}
gain decreases at the rate 40 dB per decade decrease in frequency below f_{c}
⇒ Nichrome is used for
overload line wires
heater coils
lamp filaments
all of the above
⇒ When a trivalent impurity is added, the semiconductor becomes
p type
n type
intrinsic
neutral
⇒ In a series circuit with X_{L} constant and R variable the current locus lies in the third quadrant.
TRUE
FALSE
⇒ In solids the current flow is due to electrons only.
TRUE
FALSE
⇒ For a second order system, damping ratio ζ is such that 0 < ζ <. Then the roots of characteristic equation are
real but not equal
real and equal
complex conjugate
imaginary
⇒ The stationary process has
all the statistical Properties dependent on time.
all the statistical Properties independent of time.
aime average is equal to ensemble average.
zero variance.
⇒ In an R-S latch, to set the output to high
R is low and S is high
R and S are high
R and S are low
R is high and S is low
⇒ For TM waves in a parallel plate waveguide, the minimum attenuation arising from imperfect conductors would occur at a freq. of (f_{c} is the cut off frequency)
3 f_{c}
3 f_{c}
2 f_{c}
2 f_{c}
⇒ Which of the following is used as detector in audio frequency ac bridges?
AC voltmeter
CRO
Head phones
Vibration galvanometer
⇒ TRAP is __________ whereas RST 7.5, RST 6.5, RST 5.5 are __________ .
maskable, non-maskable
maskable, maskable
non-maskable, non-maskable
non-maskable, maskable
⇒ The number of registers and flags in 8086 are
13 and 5 respectively
9 and 5 respectively
13 and 9 respectively
9 and 9 respectively
⇒ Which of the following statement is correct?
FET and junction transistor both are unipolar
FET and junction transistor both are bipolar
The FET is bipolar, while junction transistor are unipolar
The FET is unipolar, while junction transistor are bipolar
⇒ An enhancement mode MOSFET is on when the gate voltage is
zero
positive
high
more threshold value
⇒ The inverse response of a system h(n) = a^{n}∪(n) what is the condition for the system to be BIBO stable?
a is real and +ve
a is real and -ve
|a| > 1
|a| < 1
⇒ Which of the following is not a travelling wave?
e = E_{m} sin (βx - ωt)
e = E_{m} cos (βx - ωt)
e = E_{m} sin (ωt - βx)
e = E_{m} sin (βx)
⇒ For resonant long wire antenna 'n' half wavelength long in free space, if 'n' is increased then inclination of the major lobe with wire axis will __________ .
increases
decreases
remains same
none
⇒ When two 4 bit parallel adders are cascaded we get
4 bit parallel adder
8 bit parallel adder
16 bit parallel adder
none of the above
⇒ Which of the following will be hexadecimal number just for prior to F52B?
E 51 A
F 51 B
E 52 B
F 52 A
⇒ An induction wattmeter can be used for ac only.
TRUE
FALSE
⇒ In an RC series circuit R = 100 Ω and X_{C} = 10 Ω. In this circuit
the current and voltage are in phase
the current leads the voltage by about 6°
the current leads the voltage by about 84°
the current lags the voltage by about 6°
⇒ The Fourier series of an odd periodic function contains
odd harmonics only
even harmonics only
cosine harmonics only
sine harmonics only
⇒ For a good voltage amplifier, its input impedance should be
low as compared to the resistance of the source
high as compared to the resistance of the source
always inductive
always capacitive
⇒ Epitaxial growth is used in IC_{s}
because it produces low parasitic capacitance
because it yields back to back isolating pn Junction
to grow single crystal n doped silicon on a single crystal P-type substrate
to grow Selectivity single crystal P doped silicon of one resistivity on a P type substrate of a different resistivity