Discuss
menu
search
person
Login
Register
search
edit
Ask a Question
Discuss
All Activity
Q&A
Questions
Hot!
Unanswered
Tags
Users
Ask a Question
What is the direction of an AC current?
Speak Question
asked
Mar 14, 2018
by
anonymous
What is the direction of an AC current?
direction
ac
current
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2.5k
views
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
2
Answers
Speak Answer
answered
Aug 7, 2018
by
gabriel orina
It flows both foward direction and backward direction at a given frequecy.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
Please
log in
or
register
to add a comment.
Speak Answer
answered
Aug 8, 2018
by
anonymous
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.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
Please
log in
or
register
to add a comment.
← Prev Question
Next Question →
Related questions
asked
Mar 14, 2018
by
anonymous
How does AC current change direction?
How does AC current change direction?
Last answer:
This is because the angle at which the magnetic fields cuts across a winding changes its poles thus current has to change dirention .
ac
current
change
direction
thumb_up_alt
0
like
thumb_down_alt
0
dislike
68
views
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
thumb_up_alt
0
like
thumb_down_alt
0
dislike
144
views
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
thumb_up_alt
0
like
thumb_down_alt
0
dislike
81
views
1
answer
asked
Apr 28, 2018
by
anonymous
The direction of rotation of an inverter fed 3-phase ac motor is reversed by
The direction of rotation of an inverter fed 3-phase ac motor is reversed by (A) a mechanical reversing switch (B) reversing the input dc link voltage (C) operating the inverter as a rectifier (D) changing the sequence of switching
Last answer:
The direction of rotation of an inverter fed 3-phase ac motor is reversed by changing the sequence of switching
direction
rotation
inverter
fed
3-phase
ac
motor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
119
views
1
answer
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
thumb_up_alt
0
like
thumb_down_alt
0
dislike
66
views
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
thumb_up_alt
0
like
thumb_down_alt
0
dislike
70
views
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
thumb_up_alt
0
like
thumb_down_alt
0
dislike
75
views
1
answer
asked
Oct 3, 2017
by
anonymous
why current flows in opposite direction of electrons ?
why current flows in opposite direction of electrons?
Last answer:
Hi team, the current flow is nothing but flow of electrons But the conventional direction I'd opposite to actual current flow . ..
current
flows
opposite
direction
electrons
thumb_up_alt
1
like
thumb_down_alt
0
dislike
90
views
1
answer
asked
Mar 14, 2018
by
anonymous
Is current from a battery AC or DC?
Is current from a battery AC or DC?
Last answer:
The current from the battery is DC
current
battery
ac
dc
thumb_up_alt
0
like
thumb_down_alt
0
dislike
104
views
2
answers
asked
Nov 22, 2019
by
anonymous
Alternating current (AC)
Alternating current (AC)
Last answer:
AC stands for Alternating Current meaning voltage or current that changes polarity or direction respectively over time. An Alternating Current (AC) is an electric current whose magnitude ... energy are known as alternators and are simpler construction than DC electromechanical generators.
alternating
current
ac
english
electrical
engineering
thumb_up_alt
0
like
thumb_down_alt
0
dislike
148
views
2
answers
asked
Mar 14, 2018
by
anonymous
Do cell phones use AC or DC current?
Do cell phones use AC or DC current?
Last answer:
DC of course.
cell
phones
use
ac
dc
current
thumb_up_alt
0
like
thumb_down_alt
0
dislike
179
views
2
answers
asked
Mar 11, 2018
by
anonymous
Why do we use AC current in our homes?
Why do we use AC current in our homes?
Last answer:
We used it for cooking rice, For washing clothes and for lights in the house.
use
ac
current
homes
thumb_up_alt
0
like
thumb_down_alt
0
dislike
174
views
3
answers
asked
Mar 24, 2018
by
anonymous
The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of______degrees.
The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of______degrees.
Last answer:
The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of 45 degrees.
rms
sinusoidal
ac
current
value
angle
thumb_up_alt
1
like
thumb_down_alt
0
dislike
490
views
1
answer
asked
Jun 29, 2019
by
anonymous
Describe the difference between direct and alternating current.
Describe the difference between direct and alternating current.
Last answer:
Direct current is the flow of electricity or charge in one direction.. Alternative current is the flow of charge that doesn't flow in one direction.
ac
dc
difference
between
direct
alternating
current
thumb_up_alt
0
like
thumb_down_alt
0
dislike
5.1k
views
4
answers
asked
Mar 14, 2018
by
anonymous
What is the direction of the induced electric field?
What is the direction of the induced electric field?
Last answer:
It is in opposite direction to the one that produced it.
direction
induced
electric
field
thumb_up_alt
0
like
thumb_down_alt
0
dislike
46
views
1
answer
asked
Mar 14, 2018
by
anonymous
What is the direction of the electric field?
What is the direction of the electric field?
Last answer:
Electric field is at right angle widh flow of current (right hand rule).
direction
electric
field
thumb_up_alt
0
like
thumb_down_alt
0
dislike
100
views
1
answer
asked
Mar 14, 2018
by
anonymous
What is the direction of the flow of electrons?
What is the direction of the flow of electrons?
Last answer:
Electrons flow cathode to anode or in an oposite direction of convection current flow or holes.
direction
flow
electrons
thumb_up_alt
0
like
thumb_down_alt
0
dislike
91
views
1
answer
asked
Mar 20, 2018
by
anonymous
The direction of rotation of universal motor can be reversed the by reversing the flow of current through?
Last answer:
The direction of rotation of universal motor can be reversed the by reversing the flow of current through either armature winding or field winding.
direction
rotation
universal
motor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
104
views
1
answer
asked
Mar 20, 2018
by
anonymous
The direction of rotation of an hysteresis motor is determined by?
Last answer:
The direction of rotation of an hysteresis motor is determined by position of shaded pole with respect to main pole.
direction
rotation
hysteresis
motor
determined
thumb_up_alt
0
like
thumb_down_alt
0
dislike
132
views
1
answer
asked
Mar 15, 2018
by
anonymous
What is the direction of flow when charging a capacitor?
What is the direction of flow when charging a capacitor?
direction
flow
charging
capacitor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
60
views
0
answers
asked
Apr 29, 2018
by
anonymous
In a single-phase induction motor, the operating direction is determined by the ________
In a single-phase induction motor, the operating direction is determined by the ________ A) Rotor B) Stator C) Starting circuit D) None of these
Last answer:
In a single-phase induction motor, the operating direction is determined by the Starting circuit
single-phase
induction
motor
operating
direction
thumb_up_alt
0
like
thumb_down_alt
0
dislike
78
views
1
answer
asked
Sep 20, 2017
by
anonymous
can a DIAC conduct in both direction?
Last answer:
Yes DIAC can conduct in both direction.
diac
conduct
direction
thumb_up_alt
1
like
thumb_down_alt
0
dislike
51
views
1
answer
asked
Dec 16, 2017
by
anonymous
What is the purpose of a capacitor in an AC circuit?
What is the purpose of a capacitor in an AC circuit?
Last answer:
Every AC supply is not ideal AC it contains DC component so to provide restriction to DC component in supply we have to use Capacitor
capacitor
ac
circuit
thumb_up_alt
3
like
thumb_down_alt
0
dislike
154
views
1
answer
asked
Mar 15, 2018
by
anonymous
What is the difference between an AC and DC generator?
What is the difference between an AC and DC generator?
Last answer:
The generator which generates DC voltage is called DC generator and generator which generates AC voltage is called AC generator (or) Alternator. In DC generator armature is rotated and field winding ... generator. A DC generator can generate low voltages but an AC generator can generate upto 11kv.
difference
between
ac
dc
generator
thumb_up_alt
0
like
thumb_down_alt
0
dislike
284
views
1
answer
asked
Mar 20, 2018
by
anonymous
In case of a shaded pole motor the direction of rotation of the motor is?
Last answer:
In case of a shaded pole motor the direction of rotation of the motor is from main pole to shaded pole.
shaded
pole
motor
direction
rotation
thumb_up_alt
0
like
thumb_down_alt
0
dislike
113
views
1
answer
asked
May 1, 2018
by
anonymous
In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation,
In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation, the machine is operating as (1) synchronous motor (2) synchronous generator (3) asynchronous motor (4) asynchronous generator
Last answer:
In a synchronous machine, if the field flux axis ahead of the armature field axis in the direction of rotation, the machine is operating as synchronous generator
synchronous
machine
field
flux
axis
armature
direction
rotation
thumb_up_alt
0
like
thumb_down_alt
0
dislike
322
views
1
answer
asked
Mar 20, 2018
by
anonymous
The direction of rotation of a D.C. series motor can be changed by?
Last answer:
The direction of rotation of a D.C. series motor can be changed by interchanging field terminals.
direction
rotation
dc
series
motor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
75
views
1
answer
asked
Mar 20, 2018
by
anonymous
Direction of rotation of a split phase motor can be reversed by reversing the connection of?
Last answer:
Direction of rotation of a split phase motor can be reversed by reversing the connection of either running winding or starting winding.
direction
rotation
split
phase
motor
reversed
thumb_up_alt
0
like
thumb_down_alt
0
dislike
146
views
1
answer
asked
Mar 18, 2018
by
anonymous
How can we reverse the direction of rotation of synchronous motor?
How can we reverse the direction of rotation of synchronous motor?
Last answer:
By reversing supply phase sequence we can reverse the direction of rotation of synchronous motor.
reverse
direction
rotation
synchronous
motor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
194
views
1
answer
asked
Mar 20, 2018
by
anonymous
In repulsion motor direction of rotation of motor?
Last answer:
In repulsion motor direction of rotation of motor is the same as that of brush shift.
repulsion
motor
direction
rotation
thumb_up_alt
0
like
thumb_down_alt
0
dislike
85
views
1
answer
asked
Mar 22, 2018
by
anonymous
Two non-collinear parallel equal forces acting in opposite direction?
Two non-collinear parallel equal forces acting in opposite direction?
Last answer:
Two non-collinear parallel equal forces acting in opposite direction constitute a couple.
non-collinear
parallel
forces
opposite
direction
thumb_up_alt
0
like
thumb_down_alt
0
dislike
92
views
1
answer
asked
Jun 29, 2019
by
anonymous
Is the power line voltage available in our homes a dc or an ac voltage?
Is the power line voltage available in our homes a dc or an ac voltage?
Last answer:
The power line voltage available in our homes is AC. Mobile dwellings are the most commonly DC-supplied homes and even then they tend to include AC supply for heavier loads.
is
the
power
line
voltage
available
in
our
homes
a
dc
or
an
ac
thumb_up_alt
0
like
thumb_down_alt
0
dislike
5.0k
views
1
answer
asked
Jul 30, 2019
by
anonymous
Define : i) Average value ii) RMS value of an AC Wave.
Define : i) Average value ii) RMS value of an AC Wave.
Last answer:
i) Average value: The average value is defined as the average of all instantaneous values during one alternation . That is, the ratio of the sum of all considered instantaneous values to the ... as produced by the alternating current when flowing through the same resistance for the same time.
average
value
rms
ac
wave
thumb_up_alt
0
like
thumb_down_alt
0
dislike
87
views
1
answer
asked
Mar 25, 2018
by
anonymous
In an AC. circuit, a low value of kVAR compared with kW indicates?
In an AC. circuit, a low value of kVAR compared with kW indicates?
Last answer:
In an AC. circuit, a low value of kVAR compared with kW indicates high power factor.
ac
circuit
low
value
kvar
compared
kw
thumb_up_alt
0
like
thumb_down_alt
0
dislike
353
views
1
answer
asked
Mar 14, 2018
by
anonymous
Why does a transformer only work with an AC supply?
Why does a transformer only work with an AC supply?
Last answer:
The transformer work depends on the induction as main principle ,for that AC is the right means
transformer
only
work
ac
supply
thumb_up_alt
0
like
thumb_down_alt
0
dislike
109
views
3
answers
asked
Mar 10, 2018
by
anonymous
Can you apply Thevenin's theorem in an AC circuit?
Can you apply Thevenin's theorem in an AC circuit?
Last answer:
It can be applied to AC circuits
thevenins
theorem
ac
circuit
thumb_up_alt
0
like
thumb_down_alt
0
dislike
75
views
1
answer
asked
Mar 10, 2018
by
anonymous
Can we apply Norton's theorem in an AC circuit?
Can we apply Norton's theorem in an AC circuit?
nortons
theorem
ac
circuit
thumb_up_alt
0
like
thumb_down_alt
0
dislike
65
views
0
answers
asked
Apr 26, 2020
by
anonymous
What is the advantage of AC over DC electrical transmission?
What is the advantage of AC over DC electrical transmission?
advantage
ac
over
dc
electrical
transmission
thumb_up_alt
0
like
thumb_down_alt
0
dislike
63
views
0
answers
asked
Sep 7, 2018
by
anonymous
What is the need of polarity marking in polyphase AC circuits?
What is the need of polarity marking in polyphase AC circuits?
Last answer:
Need of Polarity Marking in Polyphase AC Circuits: i) Polarity marking of terminals provides reference polarity for better understanding of system, even if the polarity of ac voltage changes ... of current transformers in relay protection circuit and getting desired performance is very difficult.
polarity
marking
polyphase
ac
circuits
thumb_up_alt
0
like
thumb_down_alt
0
dislike
80
views
1
answer
asked
Aug 15, 2019
by
anonymous
What is the conversion between. AC to AC ? DC to DC? AC to DC? DC to AC ?
What is the conversion between. AC to AC ? DC to DC? AC to DC? DC to AC ?
Last answer:
1.ac to ac is regulation 2.dc to dc is chopper 3.ac to dc is rectifier 4.dc to ac is inverter
dc
ac
thumb_up_alt
0
like
thumb_down_alt
0
dislike
63
views
1
answer
asked
Mar 11, 2018
by
anonymous
What is the symbol for AC power?
What is the symbol for AC power?
Last answer:
If you need to measure alternating current in a circuit, different multimeters have different symbols to measure it (and the corresponding voltage), usually "ACA" and "ACV," or "A" and "V" with a squiggly line (~) next to or above them.
symbol
ac
power
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2.6k
views
1
answer
asked
Jun 18, 2018
by
anonymous
An AC supply of 230 V is applied to a half-wave rectifier circuit through a transformer having primary to
An AC supply of 230 V is applied to a half-wave rectifier circuit through a transformer having primary to secondary turn’s ratio 12:1. The peak inverse voltage is A) 8.62 V B) 12 V C) 19.17 V D) 27.11 V
Last answer:
An AC supply of 230 V is applied to a half-wave rectifier circuit through a transformer having primary to secondary turn’s ratio 12:1. The peak inverse voltage is A) 8.62 V B) 12 V C) 19.17 V D) 27.11 V
ac
supply
half-wave
rectifier
circuit
transformer
thumb_up_alt
0
like
thumb_down_alt
0
dislike
125
views
1
answer
asked
Apr 29, 2018
by
anonymous
An unshielded moving iron voltmeter is used to measure the voltage in an AC circuit. The stray DC magnetic
An unshielded moving iron voltmeter is used to measure the voltage in an AC circuit. The stray DC magnetic field having a component along the axis will be (1) unaffected (2) decreased (3) increased (4) either decreased or increased depending on the direction of the DC field
Last answer:
An unshielded moving iron voltmeter is used to measure the voltage in an AC circuit. The stray DC magnetic field having a component along the axis will be either decreased or increased depending on the direction of the DC field
unshielded
moving
iron
voltmeter
used
measure
voltage
ac
circuit
thumb_up_alt
0
like
thumb_down_alt
0
dislike
264
views
1
answer
asked
Apr 30, 2018
by
anonymous
An ac voltmeter using full -wave rectification and having a sinusoidal input has an ac sensitivity equal to
An ac voltmeter using full -wave rectification and having a sinusoidal input has an ac sensitivity equal to (1) 1.414 times dc sensitivity (2) dc sensitivity (3) 0.9 times dc sensitivity (4) 0.707 times dc sensitivity
Last answer:
An ac voltmeter using full -wave rectification and having a sinusoidal input has an ac sensitivity equal to 0.9 times dc sensitivity
ac
voltmeter
full-wave
rectification
sinusoidal
thumb_up_alt
0
like
thumb_down_alt
0
dislike
436
views
1
answer
asked
Apr 29, 2018
by
anonymous
A large AC generator, supplying power to an infinite bus, has a sudden short-circuit occurring at its terminals
A large AC generator, supplying power to an infinite bus, has a sudden short-circuit occurring at its terminals. Assuming the prime mover input and the voltage behind the transient reactance to remain constant immediately after the fault, acceleration of the generator rotor is
Last answer:
A large AC generator, supplying power to an infinite bus, has a sudden short-circuit occurring at its terminals. Assuming the prime mover input and the voltage behind the transient reactance ... , acceleration of the generator rotor is inversely proportional to the moment of inertia of the machine
large
ac
generator
thumb_up_alt
0
like
thumb_down_alt
0
dislike
118
views
1
answer
asked
Apr 28, 2018
by
anonymous
In an adjustable speed ac drive which quantity gets reduced above rated speed ?
In an adjustable speed ac drive which quantity gets reduced above rated speed ? (A) developed torque (B) stator frequency (C) reduced starting torque (D) stator current
Last answer:
In an adjustable speed ac drive which quantity gets reduced above rated speed ? (A) developed torque (B) stator frequency (C) reduced starting torque (D) stator current
adjustable
speed
ac
drive
thumb_up_alt
0
like
thumb_down_alt
0
dislike
78
views
1
answer
asked
Mar 15, 2018
by
anonymous
What is the principle of AC motor?
What is the principle of AC motor?
principle
ac
motor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
53
views
0
answers
asked
Mar 10, 2018
by
anonymous
What is the use of AC and DC drives?
What is the use of AC and DC drives?
use
ac
dc
drives
thumb_up_alt
0
like
thumb_down_alt
0
dislike
73
views
0
answers
asked
Mar 10, 2018
by
anonymous
What is the difference between AC and DC drive?
What is the difference between AC and DC drive?
Last answer:
AC means alternating current It's Frequency is 50hz Dc means direct current ItsI Frequency is 0Hz
difference
between
ac
dc
drive
thumb_up_alt
0
like
thumb_down_alt
0
dislike
132
views
1
answer
asked
Aug 9, 2017
by
anonymous
what is AC motor?
AC motor
Last answer:
AC motor AC motor have two types one is Induction motor and second is synchronous motor. Induction motor have two types one is single phase induction motor and second is three phase ... self starting motor so using external motor or we have to start it as induction motor.
ac
motor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
72
views
1
answer
Install Now
...