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Assertion (A): An op-amp amplifier can amplify dc signal Reason (R): An op-amp amplifier is a direct coupled amplifier | |
A. | Both A and R are correct and R is correct explanation for A [Correct Answer] |
B. | Both A and R are correct but R is not correct explanation for A [Wrong Answer] |
C. | A is correct R is wrong [Wrong Answer] |
D. | A is wrong R is correct [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 :
⇒ Modulation system used for video-modulation in television broadcast is
SSB AM with carrier
SSB with carrier suppressed
DSB AM with carrier
a modified form of SSB with carrier called vestigial sideband
⇒ Which is correct with respect to computer memory?
Only a particular address can have a particular memory
Any address can have any memory
To read a word from computer memory, it is not necessary to specify a location
None of the above
⇒ A circuit has two branches 1 and 2 in parallel. If |Q_{1}| = 8 KVAR and |Q_{2}| = 6 KVAR, the magnitude of total kvar drawn form supply will be
14 KVAR
2 KVAR
zero
14 or 2 KVAR
⇒ During forward blocking state of SCR, the voltage and current respectively are
high and high
low and low
high and low
low and high
⇒ In setting up 'for' loops in Pascal, the initial and final values of index may be
integer constants
Integer constants or integer variable names
integer constants or integer variable names or integer expressions
integer constants or real constants
⇒ Which statement is true for an ac circuit?
Active power is always less than apparent power
Active power cannot be more than apparent power
Active power is always more than reactive power
Active power cannot be more than reactive power
⇒ In case of antenna the lower value of Q indicates
higher bandwidth
lower bandwidth
higher distortion
lower distortion
⇒ For an N-point FFT algorithm with N = 2^{m} which one of the following statements is TRUE?
It is not possible to construct a signal flow graph with both input and output in normal order
The number of butterflies in the m^{th} stage is N/m
In-place computation requires storage of only 2N node data
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⇒ When thyristors are connected in series and parallel, it may be necessary to have :
current derating
voltage derating
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none of the above
⇒ The distance of poles from origin depends on
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damping ratio
both (a) and (b)
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⇒ Digital television is also called
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High deflection television
High display television
⇒ Which of the following element has four valence electrons?
Silicon
Germanium
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None of the above
⇒ For the system of the given figure |G(jω)| = 0 dB at &omeg
0
1 rad/sec.
∞
2.38 rad/sec.
⇒ An RC series circuit is charged by a voltage E. After a long time the battery is removed and a short circuit is placed across R-C. Then
the polarity of voltage across R is same during discharge and during charge
the polarity of voltage across R during discharging is opposite to that during charging
the polarity of voltage across R depends on time constant RC
none of the above
⇒ Which one of the following parameters does not exist for the two port network shown in the given fig
ABCD
y
h
z
⇒ In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The image frequency at 25 MHz will be
24.09 MHz
24.54 MHz
25.45 MHz
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⇒ A disadvantage of microstrip line as the connections of compared to strip line is that former
do not lend themselves to printed circuit
are more likely to radiate
are bulky
are more expensive and complex
⇒ In figure, the magnitude
must be more than that of V_{a}
must be more than that of V_{b}
must be more than that of V_{a} or V_{b}
can be equal to or less than or more than that of V_{a} or V_{b}
⇒ In a TWT the amplitude of resultant wave travelling down the helix
increases exponentially
increases linearly
decreases exponentially
is almost constant
⇒ Consider the following
1, 2 and 3
1 and 2 only
1 only
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⇒ Two coils having equal resistance but different inductances are connected in series. The time constant of the series combination is
average of the time constants of individual coils
sum of the time constants of the individual coils
geometric mean of the time constants of individual coils
product of the time constants of the individual coils
⇒ The number of memory locations in which 14 address bits can access is
1024
2048
4096
16384
⇒ It is desired to evaluate the expression
⇒ Modulation system used for video-modulation in television broadcast is
SSB AM with carrier
SSB with carrier suppressed
DSB AM with carrier
a modified form of SSB with carrier called vestigial sideband
⇒ Which is correct with respect to computer memory?
Only a particular address can have a particular memory
Any address can have any memory
To read a word from computer memory, it is not necessary to specify a location
None of the above
⇒ A circuit has two branches 1 and 2 in parallel. If |Q_{1}| = 8 KVAR and |Q_{2}| = 6 KVAR, the magnitude of total kvar drawn form supply will be
14 KVAR
2 KVAR
zero
14 or 2 KVAR
⇒ During forward blocking state of SCR, the voltage and current respectively are
high and high
low and low
high and low
low and high
⇒ In setting up 'for' loops in Pascal, the initial and final values of index may be
integer constants
Integer constants or integer variable names
integer constants or integer variable names or integer expressions
integer constants or real constants
⇒ Which statement is true for an ac circuit?
Active power is always less than apparent power
Active power cannot be more than apparent power
Active power is always more than reactive power
Active power cannot be more than reactive power
⇒ In case of antenna the lower value of Q indicates
higher bandwidth
lower bandwidth
higher distortion
lower distortion
⇒ For an N-point FFT algorithm with N = 2^{m} which one of the following statements is TRUE?
It is not possible to construct a signal flow graph with both input and output in normal order
The number of butterflies in the m^{th} stage is N/m
In-place computation requires storage of only 2N node data
Computation of a butterfly requires only one complex multiplication
⇒ When thyristors are connected in series and parallel, it may be necessary to have :
current derating
voltage derating
both current and voltage derating
none of the above
⇒ The distance of poles from origin depends on
undamped natural frequency
damping ratio
both (a) and (b)
neither (a) nor (b)
⇒ Digital television is also called
High digital television
High definition television
High deflection television
High display television
⇒ Which of the following element has four valence electrons?
Silicon
Germanium
Both (a) and (b) above
None of the above
⇒ For the system of the given figure |G(jω)| = 0 dB at &omeg
0
1 rad/sec.
∞
2.38 rad/sec.
⇒ An RC series circuit is charged by a voltage E. After a long time the battery is removed and a short circuit is placed across R-C. Then
the polarity of voltage across R is same during discharge and during charge
the polarity of voltage across R during discharging is opposite to that during charging
the polarity of voltage across R depends on time constant RC
none of the above
⇒ Which one of the following parameters does not exist for the two port network shown in the given fig
ABCD
y
h
z
⇒ In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The image frequency at 25 MHz will be
24.09 MHz
24.54 MHz
25.45 MHz
25.91 MHz
⇒ A disadvantage of microstrip line as the connections of compared to strip line is that former
do not lend themselves to printed circuit
are more likely to radiate
are bulky
are more expensive and complex
⇒ In figure, the magnitude
must be more than that of V_{a}
must be more than that of V_{b}
must be more than that of V_{a} or V_{b}
can be equal to or less than or more than that of V_{a} or V_{b}
⇒ In a TWT the amplitude of resultant wave travelling down the helix
increases exponentially
increases linearly
decreases exponentially
is almost constant
⇒ Consider the following
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1, 2 and 3
1 and 2 only
1 only
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⇒ Two coils having equal resistance but different inductances are connected in series. The time constant of the series combination is
average of the time constants of individual coils
sum of the time constants of the individual coils
geometric mean of the time constants of individual coils
product of the time constants of the individual coils
⇒ The number of memory locations in which 14 address bits can access is
1024
2048
4096
16384
⇒ It is desired to evaluate the expression
F = B * COS (Y) + C * SQR (COS (Y) + A * COS (Y) * COS (Y) * COS (Y)
F = B * COS (Y) + C * SQR [COS (Y)] + A * COS (Y) * SQR [COS (Y)]
F = B * COS (Y) + C * COS(Y) * COS (Y) + A * COS (Y) * COS (Y) * COS (Y)
X = COS(Y)
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increase word size
increase word number
either increase word size or increase word number
none of the above
⇒ A control system is as shown in given figure The maximum value of gain K for which the system is stable
more than 5
equal to 5
less than 1
less than 5
⇒ In which function is each term known as maxterm?
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POS
Hybrid
SOP and Hybrid
⇒ In a dual converter both converters work as rectifiers.
TRUE
FALSE
⇒ If D is diagonal and F is focal length, lens angle θ is
θ = tan^{-1} (D/F)
θ = 2 tan^{-1} (D/F)
θ = tan^{-1} (D/2F)
θ = 2 tan^{-1} (D/2F)
⇒ Assertion (A): The number ∈ such that the probability that an error is between -∈ and + ∈ is 1 is called probable error of single obserevation.
Reason (R): The standard deviation is the arms value of the deviation from the arithmetic mean.
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
⇒ The ROC of sequence x[n] = (0.8)^{n} ∪[n] + (0.4)^{n} ∪[n]
|z| > 0.8
|z| > 0.4
0.4 < |z| < 0.8
|z| < 0.8