Question is ⇒ In which of the following circuits is op-amp used in open loop configuration?, Options are ⇒ (A) Comparator, (B) Summing amplifier, (C) Integrating amplifier, (D) Logarithmic amplifier, (E) , Leave your comments or Download question paper.

Question is ⇒ In which of the following circuits is op-amp used in open loop configuration?, Options are ⇒ (A) Comparator, (B) Summing amplifier, (C) Integrating amplifier, (D) Logarithmic amplifier, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	In which of the following circuits is op-amp used in open loop configuration?
A.	Comparator [Correct Answer]
B.	Summing amplifier [Wrong Answer]
C.	Integrating amplifier [Wrong Answer]
D.	Logarithmic amplifier [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ In n-well CMOS fabrication substrate is:
heavily doped n-type
heavily doped p-type
lightly doped n-type
lightly doped p-type

⇒ The 1150 kg geosynchronous satellite INSAT-IA parked 36000 km above India had greatly improved India's
intelligence gathering capacity
domestic communications
meteorological capability
both (b) and (c)

⇒ In a fully controlled bridge converter feeding a resistive load the waveshapes of output voltage and output current
are always similar
can never be similar
may be similar or dissimilar
are similar only if a = 0

⇒ In a CE amplifier
both ac and dc load lines have the same slope
the ac load line has more slope than dc load line
the ac load line has less slope than dc load line
the two load lines may have slope more than the other

⇒ The phenomenon of creep occurs in
energy meters
voltmeters
ammeters
wattmeters

⇒ Which one of the following parameters does not exist for the two port network shown in the given fig
ABCD
y
h
z

⇒ It is known that noise phase modulates the FM wave. As the noise side band frequency approaches the carrier frequency, the noise amplitude
will increase
will decrease
will remain constant
will reduce to negligible value

⇒ 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

⇒

Assertion (A): The duty cycle of a class C amplifier affects the power dissipation of transistor

Reason (R): At higher harmonics the efficiency of a class C amplifier becomes poor

Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct

⇒ For an op-amp source follower circuit
input and output voltages have same magnitude
output and input voltages are in phase
output and input voltages are in phase but have different magnitudes
output and input voltages have same magnitude and are in phase

⇒ Double integration of unit step function leads to
an impulse
a parabola
a ramp
a doublet

⇒ In a biased JFET (Figure) the shape of the channel is as shown bec
it is the property of material used
the drain end is more reverse biased than source end
drain end is more forward biased than source end
impurity profile changes with distance

⇒ Direct and reflected sound waves may interfere with each other.
TRUE
FALSE

⇒ Which circuit is called emitter follower?
CC
CE
CB
Both (a) and (b)

⇒ The noise figure of FET circuit is
independent of the quiescent point
dependent on the quiescent point only
dependent on the triggering mechanism
independent of all above

⇒ In 8085, the pairing of registers B, C, D, E, H, L is
B - C, D - E, H - L
B - D, C - E, H - L
B - C, D - L, H - E
B - H, D - E, C - L

⇒ A Hartley oscillator uses
a tapped capacitor
a tapped inductor
a tapped inductor for inductive feedback
none of the above

⇒ In a photo transistor the photocurrent is
emitter base junction
collector base junction
collector
either (a) or (b)

⇒ The number of comparators of needed in a parallel conversion type 8 bit A to D converter is
8
16
255
256

⇒ In a resistive ac circuit, the current __________ the voltage by __________ .
lags, 90°
lags, 45°
lags, 0°
leads 90°

⇒ Which characteristics of a memory chip is called dc characteristics?
Organisation
Timing characteristics
Physical dimensions
Power consumption and bus loading

⇒ The characteristic impedance of a twin wire feeder used for TV signals is about
1000 ohm
500 ohm
300 ohm
100 ohm

⇒ In EPROM integrated dose is defined as
UV light intensity x exposure time in seconds
UV light intensity / exposure time in seconds
exposure time in seconds / UV light intensity
none of the above

⇒ TTL inverter has
one input
two inputs
one or two inputs
three inputs

⇒ A plot of modulation index vs carrier amplitude yields a
horizontal line
vertical line
parabola
hyperbola

⇒ By what name is the equation Δ . J = 0 frequency known?
Poisson's equation
Laplace's equation
Continuity equation for steady currents
Displacement equation

⇒ The term __________ applies to troposcatter propagation
fading
Faraday rotation
SIDS
atmospheric storms

⇒

Assertion (A): FM requires more bandwidth than AM

Reason (R): Wide band FM is used for broadcast transmissions.

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 correct but R is wrong
A is wrong but R is correct

⇒ The code which provides for parity check is
Baudot
ASCII
EBCDIC
Excess-3

⇒ VLF waves are sometimes used because
they penetrate the ionosphere easily
they are very reliable
they require low power
they require transmitting antennas of convenient sizes