1 Answer

Answer :

When a line commutated converter operates in the inverter mode It delivers real power to the A.C. supply.

Related questions

Description : A three-phase, fully controlled thyristor bridge converter is used as line commutated inverter to feed 50 kW power 420 V dc to a three-phase, 415 V(line), 50 Hz ac mains. Consider dc link current to be constant. The rms current of the thyristor is  (A) 119.05 A (B) 79.37 A (C) 68.73 A (D) 39.68 A

Last Answer : A three-phase, fully controlled thyristor bridge converter is used as line commutated inverter to feed 50 kW power 420 V dc to a three-phase, 415 V(line), 50 Hz ac mains. Consider dc link current to be constant. The rms current of the thyristor is 68.73 A

Description : A 3-phase voltage source inverter operates in 180° conduction mode with a star connected resistive load. If input dc voltage is 100 V, then the peak to peak output line voltage is :

Last Answer : A 3-phase voltage source inverter operates in 180° conduction mode with a star connected resistive load. If input dc voltage is 100 V, then the peak to peak output line voltage is : 200 V

Description : What are the different methods of firing circuits for line commutated converter?

Last Answer : a. UJT firing circuit. b. The cosine wave crossing pulse timing control. c. Digital firing schemes.

Description : In practice, a current source inverter consists of an AC/ DC converter with a large inductance ‘L’ in the output. This inductance maintains a ……… …………through the switching devices over short interval of time. A) constant current B) constant voltage C) constant power D) none of the (A), (B), (C)

Last Answer : In practice, a current source inverter consists of an AC/ DC converter with a large inductance ‘L’ in the output. This inductance maintains a constant current through the switching devices over short interval of time. 

Description : What is the turn-off time for converter grade SCRs and inverter grade SCRs?

Last Answer : Turn-off time for converter grade SCRs is 50 – 100 ms turn-off time for converter grade SCRs and inverter grade SCRs and for inverter grade SCRs is 3 – 50 ms.

Description : What do you call a circuit that controls the magnetron output? A. Inverter B. Impeller C. Modulator D. Converter

Last Answer : C. Modulator

Description : The MIL is illuminated and a battery module deterioration diagnostic trouble code is stored the most like cause is a failed by a) High voltage battery b) High voltage inverter c) Motor/ generator d) DC/ DC converter

Last Answer : a) High voltage battery

Description : Consider the following statements with regard to inverters 1. Line commutated inverters can function as isolated ac sources 2. Force commutated inverters can provide independent ac voltage with adjustable voltage and frequency 3. Thyrister ... correct statements are A)1,3 B)1,3,4 C) 2,4 D) 1,4

Last Answer : Consider the following statements with regard to inverters 1. Line commutated inverters can function as isolated ac sources 2. Force commutated inverters can provide independent ac voltage with adjustable voltage and frequency 3. ... correct statements are A)1,3 B)1,3,4 C) 2,4 D) 1,4

Description : If MN/MX is low the 8086 operates in  ______ mode.   (a) Minimum (b) Maximum (c) Minimum & Maximum (d) Medium 

Last Answer : If MN/MX is low the 8086 operates in  Maximum mode. 

Description : Do the inverter battery get charged in bypass mode?

Last Answer : Battery charger won't work when an home UPS or inverter is in bypass mode. Bypass switch is used to bypass the input directly to the output whenever a fault occurs in the inverter / ... is to check the voltage and charge both batteries individually using a charger or single battery inverter.

Description : A 3-phase voltage source inverter is operated in 180o conduction mode. Which one of the following statements is true ?  (A) Both pole-voltage and line-voltage will have 3rd harmonic components ... from 3rd harmonic (D) Both pole-voltage and line-voltage will be free from 3rd harmonic components

Last Answer : A 3-phase voltage source inverter is operated in 180o conduction mode. Which one of the following statements is true ?  (A) Both pole-voltage and line-voltage will have 3rd harmonic components ... from 3rd harmonic (D) Both pole-voltage and line-voltage will be free from 3rd harmonic components

Description : What are the disadvantages of load commutated chopper?

Last Answer : a. For high power applications, efficiency becomes very low because of high switching losses at high operating frequencies. b. Freewheeling diode is subjected to twice the supply voltage. c ... other pair is commutated. This can be realized by sensing the capacitor current that is alternating.

Description : What are the advantages of load commutated chopper?

Last Answer : a. Commutating inductor is not required. b. It is capable of commutating any amount of load current. c. It can work at high frequencies in the order of kHz. d. Filtering requirements are minimal.

Description : What are the advantages of current commutated chopper?

Last Answer : a. The capacitor always remains charged with the correct polarity. b. Commutation is reliable as load current is less than the peak commutation current ICP. c. The auxiliary thyristor TA is naturally commutated as its current passes through zero value.

Description : A series mode crystal is marked 10.000 MHz., It is used in a circuit that operates the crystal in its parallel mode. The circuit can be expected to A) Run below 10 MHz B) Run at 10 MHz C) Run above 10 MHz D) Not oscillate.

Last Answer : C) Run above 10 MHz

Description : Fill in the blank(s) with the appropriate word(s)  i. A MOSFET operates in the ________________ mode when vGS < vGS(th)  ii. In the ohmic region of operation of a MOSFET vGS - vGS (th) ... ix. The safe operating area of a MOSFET is restricted on the left hand side by the ________________ limit. 

Last Answer : i. A MOSFET operates in the Cut off mode when vGS < vGS(th) ii. In the ohmic region of operation of a MOSFET vGS - vGS (th) is greater than vDS. iii. rDS (ON) of a MOSFET decreases ... Distributed under Creative Commons Attribution-ShareAlike - CC BY-SA. Version 2 EE IIT, Kharagpur

Description : A converter which can operate in both 3 pulse and 6 pulse mode is a  (A) 1 phase full converter (B) 3 phase half wave converter (C) 3 phase semi converter (D) 3 phase full converter.

Last Answer : A converter which can operate in both 3 pulse and 6 pulse mode is a 3 phase semi converter

Description : An HVDC link consist of rectifier, inverter transmission line and other equipments. Which one of the following is true for this link ?  (A) The transmission line produces/ supplies ... ) Both the converters (rectifier and inverter) consume reactive power from the respective connected AC systems

Last Answer : An HVDC link consist of rectifier, inverter transmission line and other equipments. Which one of the following is true for this link ?  (A) The transmission line produces/ supplies ... ) Both the converters (rectifier and inverter) consume reactive power from the respective connected AC systems

Description : What is means inverter topology and  name different inverter typologies?

Last Answer : Topology is the circuit arrangement. Generally 6 IGBT's for an inverter, all switching at high frequency to chop DC into AC. Most often used as a power supply or to control a motor but also as the power converter in a solar system as mentioned already.

Last Answer : Digital inverter or analog? Actually as you know, a transistor by itself is already an inverter however you can use resistive load inverter for digital circuits by having two mosfets, pmos at the top ... be connected and that connection should have a pulse signal in order to switch the mosfets. 

Last Answer : Electricity is important for all.The inverter is used to store electricity.It is easy to make a simple inverter.

Description : In a dc-ac 3-phase MOSFET bridge inverter circuit, the switches are marked in a sequence as 1, 2, 3 in the top-half and 4, 5, 6 in the bottom half of the bridge. The triggering sequence of switches that gives balanced output voltage is (A) 1 ... 3, 4, 2, 6 (C) 1, 6, 2, 4, 3, 5 (D) 1, 4, 2, 5, 3, 6

Last Answer : In a dc-ac 3-phase MOSFET bridge inverter circuit, the switches are marked in a sequence as 1, 2, 3 in the top-half and 4, 5, 6 in the bottom half of the bridge. The triggering sequence of switches that gives balanced output voltage is 1, 6, 2, 4, 3, 5

Last Answer : Igbt alone cant convert dc to ac. igbt half bridge or full bridge or three phase topology could be used to convert dc to ac. also igbt gates should be driven by microcontroller or pwm/spwm gate driving signals ... e4(-) and g4 c2e1 and c4e3 pins are AC output pins. its name is igbt inverter.

Description : what is inverter ?

Last Answer : Inverter is a device which converts DC into AC. For example, inverter are used in ups systems where the DC power stored in the battery is converted to AC when required.

Description : What medium is used by IBM token ring network that operates at either 4 Mbps or 16 Mbps? A. Twisted pair B. Coaxial cable C. Fiber-optic D. Parallel-wire line

Last Answer : A. Twisted pair

Description : The line control unit (LCU) operates on the data digital form. A. Data communications equipment (DCE) B. UART C. Modem D. Data terminal equipment (DTE)

Last Answer : D. Data terminal equipment (DTE)

Description : A two conductor 1 - pi line operates at 50 Hz.The diameter of each conductor is 20 mm and the spacing between the conductors is 3m, The height of conductor above the ground is 6 m. The capacitance of the line to neutral will be?

Last Answer : A two conductor 1 - pi line operates at 50 Hz. The diameter of each conductor is 20 mm and the spacing between the conductors is 3m, The height of conductor above the ground is 6 m. The capacitance of the line to neutral will be 9.7 pF/m.

Description : A two conductor 1 - pi line operates at 50 Hz.The diameter of each conductor is 4 cm and are spaced 6 m apart. What is the capacitive susceptance to neutral per km?

Last Answer : A two conductor 1 - pi line operates at 50 Hz. The diameter of each conductor is 4 cm and are spaced 6 m apart. 3.06 x 10-9 s/km is the capacitive susceptance to neutral per km.

Description : A two conductor 1 - pi line operates at 50 Hz. The diameter of each conductor is 2 cm and are spaced 3m apart. What is the line to line capacitance ?

Last Answer : A two conductor 1 - pi line operates at 50 Hz. The diameter of each conductor is 2 cm and are spaced 3m apart.  4.87 x 10-9 F/km is the line to line capacitance.

Description : A two conductor 1 - pi line operates at 50 Hz. The diameter of each conductor is 20 mm and the spacing between conductors is 3m. What is the inductance of each conductor per km?

Last Answer : A two conductor 1 - pi line operates at 50 Hz. The diameter of each conductor is 20 mm and the spacing between conductors is 3m. 1.19 kH/km is the inductance of each conductor per km.

Description : What will be the efficiency when the transformer operates at unity power factor and 60% of full load 

Last Answer : What will be the efficiency when the transformer operates at unity power factor and 60% of full load 96.5%

Description : A synchronous motor operates at 0.8 pf lagging. If the field current of the motor is continuously increased  1. The power factor decreases upto a certain value of field current and thereafter it increases.  2. The armature current ... the correct answer is (a) 1, 2 (b) 3, 4 (c) 1, 3 (d) 2, 4

Last Answer : A synchronous motor operates at 0.8 pf lagging. If the field current of the motor is continuously increased  1. The power factor decreases upto a certain value of field current and thereafter it increases.  2. The armature current ... the correct answer is (a) 1, 2 (b) 3, 4 (c) 1, 3 (d) 2, 4

Description : A transformer operates 24 hours day at full -load. It's full -load efficiency is :  (A) equal all day efficiency (B) more than all -day efficiency (C) less than all -day efficiency (D) equal to maximum efficiency

Last Answer : A transformer operates 24 hours day at full -load. It's full -load efficiency is : equal all day efficiency 

Description : A 150 kW electric motor has an efficiency of 92 %, when it operates at full load. Calculate the losses in the machine.  (A) 92 kW (B) 150 kW (C) 163 kW (D) 13 kW 

Last Answer : efficiency  -output /input * 100 150/0.92----------163(input) losses-----(163--150)  ---------13kw.

Description : Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is (A) Alumina (B) Platinum (C) Vanadium pentoxide (D) Iron oxide

Last Answer : Option B

Description : How does a DC to AC inverter work?

Last Answer : Start with a switching circuit that supplies the DC with one polarity then reverses the polarity, back and forth. That's done at the target AC frequency. An inverter that's any good will knock ... and will further attempt to smooth the wave to more closely resemble normal AC power from the mains.

Description : What is the load of an AC inverter on a battery?

Last Answer : answer:If this is a new inverter, figure it is only 80% efficient. If you are truly drawing 1100 Watts continuously then the inverter is drawing 1375 Watts. You are feeding it with 12 volts Power = ... gas generator. Sorry for the bad news but the most of the laws of physics are difficult to break.

Description : Road Trip ? Crockpot is 265W, 120V and my inverter is 1000w. Will I be ok cooking with it on the road?

Last Answer : Inverter will be OK. Will you be running off the battery, or while driving? You don't want a dead battery. Continuous output of 265W means it will use 530W of battery power every hour. 12V x ... Compare that to 530 WattHour for the inverter and you can figure out how many hours to a dead battery.

Description : What is plc inverter?

Last Answer : This allows the 3G3MV increased intelligence and autonomy for tasks such as positioning and synchronization. Combining the inverter and PLC eliminates the cost and delay of point-to- ... enhanced speed, positioning and function control for the application being controlled. See More industrialstorebd

Description : Which gate is used as inverter ?

Last Answer : NOT gate is used as inverter .

Description : What is an inverter ?

Last Answer : A special kind of logic circuit. If a high quality signal is given at the input of this circuit then a low quality signal is received at the output , it is called inverter.

Description : Otp shows then disconnect's in zelio sine wave inverter luminous 1600va?

Last Answer : Need Answer

Description : What is otp error code in my luminous Zelio+1100 inverter and what is solution for this?

Last Answer : Install a plastic window that can resist this air and once you do that make sure to check the information before getting in in your computer what do you want by phone

Description : Why my inverter is switching on and off in every second?

Last Answer : An inverter switching on and off means it is either getting tripped or the relay function is faulty. This may happen due to many reasons such as Fully discharged battery One or more battery is faulty ... discharged battery is the culprit. If so you have to charge the battery by any other means.

Description : What to do when inverter battery is fully discharged?

Last Answer : If the inverter battery is fully discharged then the inverter or UPS should put to OFF position and charge the inverter for enough time before putting it ON again. If the inverter is unable to charge the battery then you may charge it using another charger or inverter. Then connect it back again.

Description : My luminous inverter zelio 900VA showing error code Cbl what is this code for?

Last Answer : Cbl code on your inverter is 'check output cable' indication. This is an error code for wrong output cable connection. If you find a Cbl code on your inverter display then you have to check the output cable connection. Don't run your inverter with wrong or loose connections.

Description : What is btp error code in luminous zelio inverter?

Last Answer : The btp error code in inverters describes that the mains input MCB on the inverter is tripped so as to protect the device from a short circuit or lightening. During this error the inverter will be in ... cases btp error may even lead to a board complaint if the MCB couldn't protect the inverter.

Description : Which variable frequency drive should I use for a 1.5 ton inverter AC?

Last Answer : You do not need to use an external variable frequency drive for the said AC. You have mentioned that it is inverter AC. It means the AC is already fitted with a built in ... / compressor depending upon the room condition, external temperature, temperature setting etc. It is little complicated.

Description : Benefits of Using a DC Inverter During Road Trips?

Last Answer : The average person cannot identify a DC inverter simply by looking at one. However, most drivers do know what purpose these small devices serve. These inverters plug into a vehicle's DC outlet and ... should always consider going out and buying one of these little units for their next road trip.

Description : Why You Need a Power Inverter?

Last Answer : A power inverter is a great tool to have in an emergency. Power inverters plug into the cigarette lighter of your car to charge. They allow you to plug in and run your every day household electrics ... to plug in your coffee pot and microwave so that you have small cooking sources during an outage.