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What is the current gain?
asked
Mar 10, 2018
by
anonymous
What is the current gain?
current
gain
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1
Answer
answered
May 21, 2018
by
Neha8235
Current gain
β
=
Ic
/
Ib
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Related questions
asked
Mar 8, 2018
by
anonymous
Which configuration has the lowest current gain ?
Which configuration has the lowest current gain ?
Last answer:
Common base configuration has the lowest current gain.
configuration
lowest
current
gain
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72
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1
answer
asked
Jun 18, 2018
by
anonymous
If the base current of a BJT is 250 µA and emitter current is 15 mA, then the common base current gain will be
If the base current of a BJT is 250 µA and emitter current is 15 mA, then the common base current gain will be A) 0.98 B) 0.41 C) 59 D) 55
Last answer:
If the base current of a BJT is 250 µA and emitter current is 15 mA, then the common base current gain will be 0.98
bjt
emitter
current
common
base
gain
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147
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1
answer
asked
Jun 18, 2018
by
anonymous
A differential amplifier has a differential gain of 28000 and CMRR is 60 dB. What will be the value of common
A differential amplifier has a differential gain of 28000 and CMRR is 60 dB. What will be the value of common mode gain? A) Ac = 0.125 B) Ac = 0.33 C) Ac = 3 D) Ac = 28
Last answer:
A differential amplifier has a differential gain of 28000 and CMRR is 60 dB. What will be the value of common mode gain? A) Ac = 0.125 B) Ac = 0.33 C) Ac = 3 D) Ac = 28
differential
amplifier
gain
cmrr
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227
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1
answer
asked
Apr 26, 2018
by
anonymous
The effect of a finite gain of an operational amplifier used in an integrator is that
The effect of a finite gain of an operational amplifier used in an integrator is that (A) it would not integrate (B) the slope of the output will vary with time (C) the final value of the output voltage will reduce (D) there will be instability in the circuit
Last answer:
The effect of a finite gain of an operational amplifier used in an integrator is that there will be instability in the circuit
effect
finite
gain
operational
amplifier
used
integrator
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94
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1
answer
asked
Mar 26, 2018
by
anonymous
The voltage gain of triode depends on?
Last answer:
The voltage gain of triode depends on plate voltage.
voltage
gain
triode
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73
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1
answer
asked
Jun 18, 2018
by
anonymous
The unity gain bandwidth of an inverting amplifier is 10 MHz What would be the bandwidth if the gain is
The unity gain bandwidth of an inverting amplifier is 10 MHz What would be the bandwidth if the gain is increased to 10 V/V? A) 100 MHz B) 1 MHz C) 10 MHz D) 1 kHz
Last answer:
The unity gain bandwidth of an inverting amplifier is 10 MHz What would be the bandwidth if the gain is increased to 10 V/V? A) 100 MHz B) 1 MHz C) 10 MHz D) 1 kHz
unity
gain
bandwidth
inverting
amplifier
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83
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1
answer
asked
Jun 18, 2018
by
anonymous
What will happen to the gain margin if the gain of the open loop system is doubled?
What will happen to the gain margin if the gain of the open loop system is doubled? A) Doubled B) Becomes half C) Is not affected D) Becomes one-fourth
Last answer:
What will happen to the gain margin if the gain of the open loop system is doubled? A) Doubled B) Becomes half C) Is not affected D) Becomes one-fourth
gain
margin
open
loop
system
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145
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1
answer
asked
Mar 10, 2018
by
anonymous
What is the gain of an op amp?
What is the gain of an op amp?
gain
opamp
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57
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0
answers
asked
Mar 10, 2018
by
anonymous
What is Mason's gain formula?
What is Mason's gain formula?
Last answer:
Mason's Gain Formula
masons
gain
formula
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133
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1
answer
asked
May 3, 2018
by
anonymous
A differential amplifier has a differential gain of 20,000, CMRR : 80 dB. The common mode gain is given by
A differential amplifier has a differential gain of 20,000, CMRR : 80 dB. The common mode gain is given by
Last answer:
A differential amplifier has a differential gain of 20,000, CMRR : 80 dB. The common mode gain is given by 2
differential
amplifier
gain
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2.8k
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1
answer
asked
May 1, 2018
by
anonymous
An amplifier has a voltage gain of 120. To reduce distortion, 10% negative feedback is employed. The gain of
An amplifier has a voltage gain of 120. To reduce distortion, 10% negative feedback is employed. The gain of the amplifier with feedback is (1) 141 (2) 92.3 (3) 9.23 (4) 1.41
Last answer:
An amplifier has a voltage gain of 120. To reduce distortion, 10% negative feedback is employed. The gain of the amplifier with feedback is 9.23
amplifier
voltage
gain
reduce
distortion
negative
feedback
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157
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1
answer
asked
Apr 30, 2018
by
anonymous
If the gain of the open loop system is doubled, the gain margin
If the gain of the open loop system is doubled, the gain margin (1) Is not affected (2) Gets doubled (3) Becomes half (4) Becomes one -forth
Last answer:
If the gain of the open loop system is doubled, the gain margin Becomes half
open
loop
system
doubled
gain
margin
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346
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1
answer
asked
May 3, 2018
by
anonymous
A transfer function has a second order denominator and constant gain in the numerator
A transfer function has a second order denominator and constant gain in the numerator
Last answer:
A transfer function has a second order denominator and constant gain in the numerator the system has two zeros at infinity
transfer
function
second
order
denominator
constant
gain
numerator
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87
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1
answer
asked
Apr 30, 2018
by
anonymous
The voltage gain of a common -source JFET amplifier depends up on its
The voltage gain of a common -source JFET amplifier depends up on its (1) Input impedance (2) Amplification factor (3) Dynamic drain resistance (4) Drain load resistance
Last answer:
2
voltage
gain
common-source
jfet
amplifier
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521
views
2
answers
asked
Apr 26, 2018
by
anonymous
The gain of an ideal amplifier must be
The gain of an ideal amplifier must be
Last answer:
The gain of an ideal amplifier must be infinity
gain
ideal
amplifier
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69
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1
answer
asked
Sep 5, 2018
by
anonymous
Define gain and bandwidth of an amplifier.
Define gain and bandwidth of an amplifier.
Last answer:
Bandwidth The range of frequency over which the voltage gain is equal to or greater than 70.7% of its maximum value Gain: The ratio of output parameter (voltage/ current /power) to the input parameter (voltage/ current /power) of an amplifier is known as gain. It is denoted by a letter A
define
gain
bandwidth
amplifier
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52
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1
answer
asked
Sep 27, 2017
by
anonymous
what is the leakage current of diode?
Last answer:
In Reverse bias of diode when the cathode is connected to positive and anode is connected to negative very small current flows this very small current is known as leakage current of diode.
leakage
current
diode
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68
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1
answer
asked
Mar 19, 2018
by
anonymous
The leakage current of PN junction is caused by?
The leakage current of PN junction is caused by?
Last answer:
The leakage current of PN junction is caused by heat energy.
leakage
current
pn
junction
caused
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161
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1
answer
asked
Sep 10, 2017
by
anonymous
why bjt is called current controlled device?
Last answer:
In BJT there is movement of electrons and holes accros the junctions which is basicaly current flow.
controlled
current
bjt
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289
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2
answers
asked
May 2, 2020
by
anonymous
Define: i) Input Offset Voltage ii) Input offset Current iii) Input Bias Current iv) Output offset voltage
Define: i) Input Offset Voltage ii) Input offset Current iii) Input Bias Current iv) Output offset voltage
Last answer:
Definition of parameters of OPAMP is follows: i) Input Offset Voltage: Input offset voltage is defined as the voltage that must be applied between the two input terminals of an OPAMP to null or ... to ground) and output voltage is obtained non zero such voltage is output offset voltage of opamp.
define
i
input
offset
voltage
ii
current
iii
bias
iv
output
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176
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1
answer
asked
Jun 28, 2019
by
anonymous
What is the unit of electric current?
A) Watt B) Volts C) Farad D) Ampere
Last answer:
Correct answer: D) Ampere
electric
unit
current
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2.5k
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1
answer
asked
Mar 15, 2018
by
anonymous
What is the relationship between power and current?
What is the relationship between power and current?
Last answer:
P = I2R Where P = power I = Current R = Resistance This the relationship between current and power.
relationship
between
power
current
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86
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2
answers
asked
Mar 15, 2018
by
anonymous
What is the difference between eddy current and hysteresis loss?
What is the difference between eddy current and hysteresis loss?
Last answer:
Loss occurred by magnetising and demagnetising process is called histerisis loss and the current flowed due to the magnetic field produced by the electric field applied is called eddy current losses
difference
between
eddy
current
hysteresis
loss
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2.9k
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1
answer
asked
Mar 14, 2018
by
anonymous
What is the direction of an AC current?
What is the direction of an AC current?
Last answer:
The magnitude and direction of alternating current is changes with respect to time. So for half cycle it is positive and for next half cycle it is negative.
direction
ac
current
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views
2
answers
asked
Mar 14, 2018
by
anonymous
What is the direction of the induced current?
What is the direction of the induced current?
direction
induced
current
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66
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0
answers
asked
Mar 14, 2018
by
anonymous
What is the direction of flow of current?
What is the direction of flow of current?
Last answer:
Current flows from anode to cathode(opposite direction to flow of electrons)
direction
flow
current
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69
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1
answer
asked
Mar 14, 2018
by
anonymous
What is the direction of the conventional current flow?
What is the direction of the conventional current flow?
Last answer:
The conventional current flow in opposite direction of flow of electrons. The electrons flow from negative terminal of battery to positive terminal of battery. And conventional current flow from positive terminal of battery to negative terminal of battery.
direction
conventional
current
flow
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74
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1
answer
asked
Mar 14, 2018
by
anonymous
What is the direction of flow of electric current in an electric circuit?
What is the direction of flow of electric current in an electric circuit?
Last answer:
It flows from anode to cathode (direction of holes flow)
direction
flow
electric
current
circuit
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144
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1
answer
asked
Mar 10, 2018
by
anonymous
What is the difference between line and phase current?
What is the difference between line and phase current?
Last answer:
The currents flows through phase lines is called line voltage and currents flows from phase to neutral line is called phase current
difference
between
line
phase
current
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90
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1
answer
asked
Mar 10, 2018
by
anonymous
What type of meter is used to measure current?
What type of meter is used to measure current?
Last answer:
Ammeter
type
meter
used
measure
current
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3
answers
asked
Mar 10, 2018
by
anonymous
What is current harmonics?
What is current harmonics?
current
harmonics
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43
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0
answers
asked
Feb 3, 2018
by
anonymous
What is holding current and latching current in SCR ?
What is holding current and latching current in SCR? Draw the gate characteristics of an SCR and explain the characteristics. What are the different signals which can be used for turning on SCR by gate control? compare them.
Last answer:
(i) Holding Current: Holding current is defined as the minimum anode current required to maintain conducting SCR in the on-state. (ii) Latching Current: Latching current is defined as the ... the on-state immediately after the SCR has been turned on and the gate signal has been removed.
holding
current
latching
scr
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814
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2
answers
asked
Aug 6, 2017
by
anonymous
what is eddy current ?
what is eddy current ?
Last answer:
In magnetic circuits when we supply current to coil which wound on some core( of iron cast iron, ferrite ) material it produce magnetic field but there is small amount of flux which also ... heat and losses in magnetic circuits..for good working conditions we always try to minimize eddy current
eddy
current
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100
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1
answer
asked
Aug 3, 2017
by
anonymous
what is current?
what is current?
Last answer:
Flow of free electrons
current
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5
answers
asked
Mar 15, 2018
by
anonymous
What happens to the resistance when the current increases?
What happens to the resistance when the current increases?
Last answer:
Resistance reduces when current increases.
resistance
current
increases
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77
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1
answer
asked
Mar 15, 2018
by
anonymous
What will happen if you increase the current in the motor?
What will happen if you increase the current in the motor?
Last answer:
Increasing current means increasing frequency of the motor because current is directly proportional to rotations of the motor rotor
increase
current
motor
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142
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1
answer
asked
Mar 14, 2018
by
anonymous
What happens when you reverse the direction of the current in an electromagnet?
What happens when you reverse the direction of the current in an electromagnet?
Last answer:
When you reverse current direction in an electromagnet, the magnetic poles will also change.
reverse
direction
current
electromagnet
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1
answer
asked
Aug 25, 2019
by
anonymous
What kills, current or voltage?
What kills, current or voltage?
Last answer:
Current would kill. You can actually have thousands of bolts going through you and not even know it. Yes you probably know already voltage is current times resistance. Since your body is a resistor it would take just a small amount of current to create a very high voltage
current
voltage
kills
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127
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3
answers
asked
Mar 14, 2018
by
anonymous
What happens when a current flows through a wire?
What happens when a current flows through a wire?
Last answer:
Current can produce two effect one is heating effect and second is magnetic effect.
current
flows
through
wire
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87
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2
answers
asked
Apr 20, 2020
by
anonymous
If the 12 Ohm resistor draws a current of 1 A as shown in the figure, the value of resistance R is
If the 12 Ohm resistor draws a current of 1 A as shown in the figure, the value of resistance R is
Last answer:
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if
the
12
ohm
resistor
draws
a
current
of
1
as
shown
in
figure
value
resistance
r
is
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249
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2
answers
asked
Jul 1, 2019
by
anonymous
A charge of 0.1 C moves past a given point every 0.01 s. How much is the current?
A charge of 0.1 C moves past a given point every 0.01 s. How much is the current?
Last answer:
The current is 10.0A. 1ampere = 1 Coulomb per 1 second. 0.1Coulombs ÷ 0.01seconds = 10.0amperes.
a
charge
of
0
1
c
moves
past
given
point
every
01
s
how
much
is
the
current
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166
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1
answer
asked
May 8, 2018
by
anonymous
The operating point of a protective current transformer is near the
The operating point of a protective current transformer is near the
Last answer:
The operating point of a protective current transformer is near the Ankle point
operating
point
protective
current
transformer
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84
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1
answer
asked
May 8, 2018
by
anonymous
If the fault current is 6000 A, the relay plug setting is 150% and the CT ratio is 400/5, the plug
If the fault current is 6000 A, the relay plug setting is 150% and the CT ratio is 400/5, the plug setting multiplier will be
Last answer:
If the fault current is 6000 A, the relay plug setting is 150% and the CT ratio is 400/5, the plug setting multiplier will be 10
fault
current
ct
ratio
plug
setting
multiplier
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151
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1
answer
asked
May 8, 2018
by
anonymous
If the % reactance upto the fault point is 20%, then the short circuit current will be
If the % reactance upto the fault point is 20%, then the short circuit current will be
Last answer:
If the % reactance upto the fault point is 20%, then the short circuit current will be 5 times the full load current
reactance
fault
point
short
circuit
current
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2.6k
views
1
answer
asked
May 8, 2018
by
anonymous
Which of the following is the least expensive protection for over current in low voltage system?
Which of the following is the least expensive protection for over current in low voltage system? (A) Rewireable fuse (B) Isolator (C) Oil Circuit breaker (D) Air break circuit breaker
Last answer:
Which of the following is the least expensive protection for over current in low voltage system? (A) Rewireable fuse (B) Isolator (C) Oil Circuit breaker (D) Air break circuit breaker
over
current
low
voltage
system
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156
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1
answer
asked
May 3, 2018
by
anonymous
The coefficient of reflection for current wave is
The coefficient of reflection for current wave is
Last answer:
The coefficient of reflection for current wave is 1 or -1
coefficient
reflection
current
wave
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89
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1
answer
asked
May 3, 2018
by
anonymous
For a round wire, the approximate value of fusing current is given by
For a round wire, the approximate value of fusing current is given by
Last answer:
For a round wire, the approximate value of fusing current is given by K√d3
round
wire
value
fusing
current
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106
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1
answer
asked
Apr 30, 2018
by
anonymous
The skin effect in conductors is due to non uniform distribution of current in it and major portion of current is
The skin effect in conductors is due to non uniform distribution of current in it and major portion of current is near the _______ of conductor. (1) Surface (2) Center (3) Complete cross section area (4) Axis
Last answer:
The skin effect in conductors is due to non uniform distribution of current in it and major portion of current is near the Surface of conductor.
skin
effect
conductors
uniform
distribution
major
portion
current
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181
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1
answer
asked
Apr 30, 2018
by
anonymous
The inrush current of a transformer at no load is maximum if the supply voltage is switched on
The inrush current of a transformer at no load is maximum if the supply voltage is switched on (1) at peak voltage value (2) at zero voltage value (3) at half voltage value (4) at 0.866 time voltage value
Last answer:
At 0.866 time voltage value
inrush
current
transformer
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80
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2
answers
asked
Apr 30, 2018
by
anonymous
The eddy current loss in a dc generator is 400 W at 40 Hz frequency of reversal and constant flux density.
The eddy current loss in a dc generator is 400 W at 40 Hz frequency of reversal and constant flux density. When frequency is increased to 50 Hz., eddy current loss is : (A) 256 W (B) 320 W (C) 500 W (D) 625 W
Last answer:
The eddy current loss in a dc generator is 400 W at 40 Hz frequency of reversal and constant flux density. When frequency is increased to 50 Hz., eddy current loss is : 625 W
eddy
current
loss
dc
generator
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answer
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