What is the meaning of saying I and V are in phase?

What is the meaning of saying I and V are in phase?
by

1 Answer

Answer :

The angle between the I and V waveforms is zero which means the load is purely resistive.
by

Related questions

Why is 440 V used for motors and 110/220 V used for lighting?

Description : Why is 440 V used for motors and 110/220 V used for lighting?

Last Answer : Motor load currents are large. Motors are 3-phase loads. A higher 440V voltage means lesser current for the same power and hence losses and size of cable wires is lower. Lighting is single phase ... small, hence lower voltage means less insulation in the cable wires. Ask E/O for more information

Size of V belts used for 25KW Alternator a. C121 c. C122 b. C123 d. C124

Description : Size of V belts used for 25KW Alternator a. C121 c. C122 b. C123 d. C124

Last Answer : c. C122

Which one of the following radiations has the most energetic photon? a) T.V. waves b) Micro waves c) X-rays d)  - rays

Description : Which one of the following radiations has the most energetic photon? a) T.V. waves b) Micro waves c) X-rays d)  - rays

Last Answer : d)  - rays

The potential barrier for germanium is _______ (a) 0.6 V (b) 0.2 V (c) 0.3 V (d) 0.5 V

Description : The potential barrier for germanium is _______ (a) 0.6 V (b) 0.2 V (c) 0.3 V (d) 0.5 V

Last Answer : (c) 0.3 V

One henry is equal to.......: a. VA/s b. Nm/A c. As/V d. Vs/A

Description : One henry is equal to.......: a. VA/s b. Nm/A c. As/V d. Vs/A

Last Answer : d. Vs/A

The negative sign in expression ɛ= -vBL shows that the angle between the direction of L and (v x B) is: a. 90 b. 180 c. 45 d. 0

Description : The negative sign in expression ɛ= -vBL shows that the angle between the direction of L and (v x B) is: a. 90 b. 180 c. 45 d. 0

Last Answer : a. 90

Turn ratio of a transformer is 5. If 220 V AC is applied to its primary coil, voltage in the secondary coil will be: a. 44V b. 4.4 V c. 220V d. 1100V

Description : Turn ratio of a transformer is 5. If 220 V AC is applied to its primary coil, voltage in the secondary coil will be: a. 44V b. 4.4 V c. 220V d. 1100V

Last Answer : c. 220V

One henry is equal to: a. Vs-1 A b. NmA-1 c. V -1 s A d. V s A

Description : One henry is equal to: a. Vs-1 A b. NmA-1 c. V -1 s A d. V s A

Last Answer : d. V s A

If velocity of a conductor moving through a magnetic field ‘B’ is made zero, then Motional emf will be: a. –VBL b. –V/BL c. – BL/V d. zero

Description : If velocity of a conductor moving through a magnetic field ‘B’ is made zero, then Motional emf will be: a. –VBL b. –V/BL c. – BL/V d. zero

Last Answer : a. –VBL

A galvanometer having a resistance of 4.5 Ω can read up to 5 mA. If it is to read 100 V, then the high resistance to be used in series will be a) 19998 Ω b) 19995.8 Ω c) 19995.5 Ω d) 19996.5 Ω

Description : A galvanometer having a resistance of 4.5 Ω can read up to 5 mA. If it is to read 100 V, then the high resistance to be used in series will be a) 19998 Ω b) 19995.8 Ω c) 19995.5 Ω d) 19996.5 Ω

Last Answer : c) 19995.5

Electric power a. V×I b. W/t c. V 2 /I d. E2 /t

Description : Electric power a. V×I b. W/t c. V 2 /I d. E2 /t

Last Answer : . V×I

Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains? a. 40 W bulb b. 60 W blub c. 100 W blub d. all will burn equally brightly

Description : Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains? a. 40 W bulb b. 60 W blub c. 100 W blub d. all will burn equally brightly

Last Answer : a. 40 W bulb

How is the speed of a 3-phase induction motor varied?

Description : How is the speed of a 3-phase induction motor varied?

Last Answer : The speed of a normal 3-phase induction motor is a function of the frequency of the supply voltage. Changing the speed of such a motor hence requires building a 3-phase power frequency ... realised by using power MOSFETs (or IGBTs) capable of handling high voltages and fast switching speeds.

What does three-phase current mean?

Description : What does three-phase current mean?

Last Answer : Three current sinusoidal waveforms equal in magnitude but with a phase shift of 120 degrees. 25

Is there phase in DC?

Description : Is there phase in DC?

Last Answer : No

What is meant by phase in AC?

Description : What is meant by phase in AC?

Last Answer : Two or more AC voltages or currents that are out of step with each other. Their peaks and zero points do not match up at the same points in time. This is meant by phase.

The circuit which changes input signal at output with phase shift of 1800 is called (a) Amplifier (b) operational amplifier (c) switch (d) inverter

Description : The circuit which changes input signal at output with phase shift of 1800 is called (a) Amplifier (b) operational amplifier (c) switch (d) inverter

Last Answer : (d) inverter

What is the meaning of a normally open contact?

Description : What is the meaning of a normally open contact?

Last Answer : The contact is open in the normal (de-energised condition).

What is the meaning of residual magnetism?

Description : What is the meaning of residual magnetism?

Last Answer : Residual magnetism is a property in which certain amount of excitation remains back in the conductor even after the removal of the magnets.

What is the meaning of excitation in an alternator?

Description : What is the meaning of excitation in an alternator?

Last Answer : An electric generator or electric motor consists of a rotor spinning in a magnetic field. The magnetic field may be produced by permanent magnets or by field coils. In the case of a machine ... rotor. The process of generating a magnetic field by means of an electric current is called excitation.

What is meaning of short circuit?

Description : What is meaning of short circuit?

Last Answer : A short circuit occurs when conductors are connected (shorted) together by a fault. This is normally phase to phase fault due to failure of insulation by something cutting the wires, fires, etc.

What is the meaning of overload?

Description : What is the meaning of overload?

Last Answer : An overload is a current over and above the normal load current (over the load). In other words greater than the original design current. This can be a momentary overload such as the starting ... such as plugging in too many appliances at once or a motor that has faulty bearings or gets jammed

What is the meaning of ACB, MCCB, NFB?

Description : What is the meaning of ACB, MCCB, NFB?

Last Answer : Air circuit breaker for 400V higher current ratings. Moulded case circuit breaker for 400V medium current ratings. No Fuse Breaker – 75 A capacity

What is the meaning of Star winding/ Delta winding?

Description : What is the meaning of Star winding/ Delta winding?

Last Answer : Refer Dennis T Hall

What is the meaning of earthing in a ship?

Description : What is the meaning of earthing in a ship?

Last Answer : Ask E/O

What is the meaning of power factor?

Description : What is the meaning of power factor?

Last Answer : Power factor is the cosine of the angle between voltage and current waveform.

What is the meaning of preferential trip? Why is it provided

Description : What is the meaning of preferential trip? Why is it provided

Last Answer : Preferential trip is a kind of electrical arrangement on ship which is designed to disconnect the non-essential circuit i.e. non-essential load from the main bus bar in case of partial failure or overload ... gear) and trips the non essential loads (like AC and galley) and is a safety feature.

5) An iron ring of mean circumference of 80 cm is uniformly wound with 500 turns of wire. Calculate the value of flux density that a current of 1 A would produce in the ring. Assume relative permeability 1400.

Description : Please ripley me due to emergency

Last Answer : To calculate the flux density in the ring, you need to use the following formula: B = (μ * I * N) / (2 * π * r) where: B is the flux density in the ring (in teslas) μ is the relative permeability ... 2 * π * 0.127 m) = 0.53 T So the flux density in the ring would be approximately 0.53 teslas.

Can you help me solve my electrical mystery?

Description : Can you help me solve my electrical mystery?

Last Answer : Any signs of animal life? They can get in the walls and chew on the wires. Or is it the entire area served by that breaker? The breaker could be bad. It happens with anything mechanical.

How to tell if a power strip is burned out?

Description : How to tell if a power strip is burned out?

Last Answer : answer:Personally, I would either toss it, or down grade it to outdoor use only. I wouldn’t take a chance with it in the house. Yes, you can let it cool down, then test it again. But a failure is a failure. Does it have a reset button? What price range did you pay?

I accidently soaked an extension cord. Is it safe to use it again after letting it dry out for awhile?

Description : I accidently soaked an extension cord. Is it safe to use it again after letting it dry out for awhile?

Last Answer : The plug end is easier to dry out than the socket end get out your blow-dryer and set it to high and blow the end that got wet for a while. That will get most of the water off/out of ... up or sputter. Most modern extension cords are pretty watertight so there shouldn't be any water down the wire.

How can a solar array power source be bypassed when the batteries run low?

Description : How can a solar array power source be bypassed when the batteries run low?

Last Answer : Ah got it. If anyone else is interested, you need an “automatic transfer switch” – or get a manual one for that mad scientist charm.

How to stop a signal going through a wire?

Description : How to stop a signal going through a wire?

Last Answer : Use a switch or a variable resistor

Air conditioning will not turn on, is it electrical?

Description : Air conditioning will not turn on, is it electrical?

Last Answer : Pull the Thermostat off the wall and see if it is connected correctly to the AC switch. There should be no dangling wires, and the post labeled for the AC should have an attached wire.

What is the speaker driving voltage of an amplifier?

Description : What is the speaker driving voltage of an amplifier?

Last Answer : I have to ask WHY? That said, Speakers and a light bulb are two different types of load, and the the lights will probably fry the output transistor.

Why is my Garbage disposal leaking water from the bottom?

Description : Why is my Garbage disposal leaking water from the bottom?

Last Answer : Replace it. The seal is leaking, and most cases it is just not worth the cost and work, quicker and cheaper to replace it .

Have you ever taken a shower or bath during an electrical storm?

Description : Have you ever taken a shower or bath during an electrical storm?

Last Answer : I’ve heard this rumor, and I too question it’s validity. I mean, if electricity can’t travel up a stream of urine (See mythbusters) I’m pretty sure it couldn’t travel through a shower stream. Perhaps through the drain? In either case, I’ve taken a shower in a storm before, and.. well, you see?

Electrical breaker box is buzzing-why??

Description : Electrical breaker box is buzzing-why??

Last Answer : No! Do not upgrade the breaker. The wire must also be upgraded if you do. Try plugging it in a different room. Is the problem still there?

Laptop What ?

Last Answer : Laptop Yes A Portable Computer.

circuit I mean What ?

Last Answer : electricity Source , conductor , control Instruments , Usage Machines , Protection Machines In combination Such A Path Whose The middle With Current Flowing To be Can Him Circuit Or Circuit Says.

House Wiring How much? Type, What? What ?

Last Answer : House Wiring Mainly Two Type. A ) Surface Wiring B ) Concealed Wiring Surface Wiring 5 Type : 1 ) Batten Wiring 2 ) Conduit Wiring 3 ) Clit Wiring 4 ) Casing Wiring 5 ) M. S. Wiring Concealed Wiring Again Two Type , 1 ) Concealed Conduit 2 ) Concealed Wire Wiring

Coulomb Who Say ?

Last Answer : any Conductive The middle With One Ampere Flow One Seconds Hold on Let's go Of Any Cross section With That Amount Infusion Flowing Is Him One Coulomb Says.

Power Who Say ?

Last Answer : that At the rate Electron Flowing Become Work Done Is Or That At the rate Electricity Power Other In strength Transformed Is Him Electric Power Says.

Power Who Say ?

Last Answer : any Person Or Of the object Single In time Made Of work The amount Power Says.

Magnetic Tell me Line What ?

Last Answer : any Magnetic In the case A Isolated The answer To the pole In the free state Placement If you do The pole That Path Circulation By Him Magnetic Ball line Says.

Mutual Inductance What?

Last Answer : that Features Or Of religion Due As well as Two Coil Of one Of current Of change As a result In the other Voltage Obsessed Is That said Religion Or Features Mutual Inductions Says.

Cable Who Say ?

Last Answer : Cable Being Electric Conductive His Whose The middle With Current Movement By

Her And Wire In The difference What ?

Last Answer : her And Cable In The difference Yes His Yes Just Only A Conductor Where Cable Two Or Even more Of the conductor A Group.

Electrical Wiring Who Say ?

Last Answer : Wire Through In load ( e.g. fan , lamp ) Etc. ) electric Power Supply To do Ordinary To the system Electric Waring Says. General In a sense Load Electric Power Supply To do For Of wires Ordinary In the system Being Electric Waring.

Process Who Say ?

Last Answer : Operating Of the system Of work Basic Single Who Process Says.