A rotory converter can also be run as a?

by

1 Answer

Answer :

A rotory converter can also be run as a synchronous motor.

by

Related questions

Give the operation of single phase full wave bridge controlled converter with RL load with a neat diagram. Also draw its waveform.

Description : Give the operation of single phase full wave bridge controlled converter with RL load with a neat diagram. Also draw its waveform.

Last Answer : Single phase fully control bridge converter with RL load: 1. During positive half cycle of input voltage, T1 and T2 are forward biased and during negative half cycle, T3 and T4 are forward biased. Therefore, T1-T2 ... cycle till the firing of next pair of SCRs as shown in the waveform.

How to Run a Business Meeting

Description : How to Run a Business Meeting

Last Answer : How to Run a Business Meeting Some people in business believe that too much time spent on a meeting can lower productivity. Meetings, however, are necessary to keep everyone in the group updated on what ... in reading this article, you'll surely be eager to learn how to schedule a business meeting.

How to Run Faster ?

Description : How to Run Faster ?

Last Answer : How to Run Faster Running speed is a combination of everything from weight, leg turnover (how fast your legs move), cardio conditioning and muscle. The following are 8 ways you can learn to run faster: ... course - run safely. Watch traffic. Do not overtrain. If injured, seek help (EG Shin splints)

Instant 100 meters (How fast to run 100 meters?)

Description : Instant 100 meters (How fast to run 100 meters?)

Last Answer : Instant 100 meters (How fast to run 100 meters?) This guide outlines the step-by-step preparation for the most efficient 100-meter run. 0-15 meters With your head down, you need to ... length. Constant training and the right technique will allow you to improve your 100 meter running results.

In a ceiling fan employing capacitor run motor?

Last Answer : In a ceiling fan employing capacitor run motor secondary winding surrounds the primary winding.

The repulsion start induction run motor is used because of?

Last Answer : The repulsion-start induction-run motor is used because of high starting torque.

A universal motor can run on?

Last Answer : A universal motor can run on either A.C. or D.C.

A schrage motor can run on?

Last Answer : A schrage motor can run on zero slip, negative slip, positive slip.

In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to?

Last Answer : In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to improve power factor.

How to Build a Static 3 Phase Converter

Description : How to Build a Static 3 Phase Converter

Last Answer : How to Build a Static 3 Phase Converter Static 3 phase converters enable offices and residents to conserve energy efficiently. In fact, electricity is available in 3 power phases, which enables ... converter and the necessary appliances that are needed in building the main and the remote appliances.

Draw circuit diagram of symmetrical configuration of bridge converter.

Description : Draw circuit diagram of symmetrical configuration of bridge converter.

Last Answer : circuit diagram of symmetrical configuration of bridge converter

Give the effect of source impedance on converter operation.

Description : Give the effect of source impedance on converter operation.

Last Answer : Effect of source impedance on converter operation: For single-phase fully controlled bridge converter, the SCRs are triggered in pairs alternately. During positive half-cycle of input, SCRs T1 and T2 are triggered ... increases and as a consequence, the output dc voltage decreases. 

Draw a neat diagram of 1Ф half wave controlled converter with RL load. Give its operation.

Description : Draw a neat diagram of 1Ф half wave controlled converter with RL load. Give its operation.

Last Answer : Single phase fully controlled half wave converter:  The circuit diagram of single-phase half-wave controlled rectifier with RL load and without freewheeling diode is shown in Fig. (a). The SCR T is ... , when again pulse is applied, the SCR is turned on & the above cycle is repeated. 

The percent resolution of an 8 -bit D/A converter is

Description : The percent resolution of an 8 -bit D/A converter is

Last Answer : The percent resolution of an 8 -bit D/A converter is 0.392

A 3 -phase, fully controlled, converter is feeding power into a DC load at a constant current of 150 A, the rms

Description : A 3 -phase, fully controlled, converter is feeding power into a DC load at a constant current of 150 A, the rms value of the current flowing through each thyristor of the converter is

Last Answer : Please show the solution for this question

The no-load speed of a single-phase SCR bridge converter fed separately excited dc motor operating at a

Description : The no-load speed of a single-phase SCR bridge converter fed separately excited dc motor operating at a firing delay angle, α and flux, Φ (A) directly proportional to α and Φ (B) ... proportional to α and inversely proportional to Φ (D) directly proportional to Φ and inversely proportional to α

Last Answer : The no-load speed of a single-phase SCR bridge converter fed separately excited dc motor operating at a firing delay angle, α and flux, Φ directly proportional to α and inversely proportional to Φ

A 230 V, 50 Hz phase controlled single-phase full-controlled SCR bridge converter draws 15 A constant dc

Description : A 230 V, 50 Hz phase controlled single-phase full-controlled SCR bridge converter draws 15 A constant dc current. If the source inductance is 3 mH, the drop in dc output voltage is (A) 4.5 V (B) 6.75 V (C) 9 V (D) 13.5 V

Last Answer : A 230 V, 50 Hz phase controlled single-phase full-controlled SCR bridge converter draws 15 A constant dc current. If the source inductance is 3 mH, the drop in dc output voltage is 9 V

In a 230 V, 50 Hz single-phase SCR bridge converter operating at a firing delay angle, α and with large R-L load,

Description : In a 230 V, 50 Hz single-phase SCR bridge converter operating at a firing delay angle, α and with large R-L load, the input source current is (A) sinusoidal current (B) constant dc current (C) continuous rectangular pulses (D) alternating rectangular pulses

Last Answer : In a 230 V, 50 Hz single-phase SCR bridge converter operating at a firing delay angle, α and with large R-L load, the input source current is alternating rectangular pulses

In voltage source converter based HVDC transmission system the active power is controlled by changing

Description : In voltage source converter based HVDC transmission system the active power is controlled by changing (A) phase angle of the converter ac input voltage (B) supply frequency of the converter ac input voltage (C) magnitude of the converter ac input voltage (D) DC voltage at the inverter terminals

Last Answer : In voltage source converter based HVDC transmission system the active power is controlled by changing phase angle of the converter ac input voltage

In a 3-phase converter circuit during commutation when one SCR in one phase is turned on to turn-off an SCR

Description : In a 3-phase converter circuit during commutation when one SCR in one phase is turned on to turn-off an SCR in another phase, results in (A) voltage notching (B) harmonic distortion (C) voltage sag (D) voltage swell

Last Answer : In a 3-phase converter circuit during commutation when one SCR in one phase is turned on to turn-off an SCR in another phase, results in voltage notching

Why the power factor of semiconverter is better than full converter?

Description : Why the power factor of semiconverter is better than full converter?

Last Answer : Power factor of semiconverter is better than full converter

Explain buck converter.

Description : Explain buck or step down converter and draw its waveforms.

Last Answer : Buck converter or Step down converter: Buck converter is a step-down converter. The buck converter step-down the output voltage and step up the output current. Buck converter is a DC to DC converter. ... load. The output voltage is controlled by controlling on period and off period.

Explain full bridge converter.

Description : Explain the operation of full bridge converters with their different operating modes. State its advantages and disadvantages.

Last Answer : Full bridge converter: Full bridge converter provides isolation between input and output. Full bridge converter is used for step up or step down the input voltage. Full bridge converter consists of four power semiconductor ... Require filter on both input and output.

single phase full converter

Description : single phase full converter

Last Answer : single phase full converter

Explain flyback converter.

Description : Explain flyback converter and draw its waveforms.

Last Answer : Flyback converter: A flyback converter is used for getting DC output and for isolating input mains and output voltage. A flyback converter is like a buck-boost converter with input and output isolated. There ... during the off time transformer transfer the energy to load.

Explain buck boost converter.

Description : Explain buck boost converter and draw its waveforms.

Last Answer : Buck-Boost converter: The buck-boost converter consists of a transistor for switching purpose, diode, inductor, and capacitor. Buck-boost converter is the combination of the buck converter and boost ... In buck-boost converter both input current and diode current are discontinuous.

What is Analog to Digital Converter (ADC) ?

Description : What is Analog to Digital Converter (ADC) ?

Last Answer : Analog to Digital Converter (ADC)  Analog quantity may be voltage, temperature, sound, speed, audio etc. it is information or signal. ... digital form), digital speedometer (converts analog speed into digital form) etc.

Digital to Analog Converter (DAC)

Description : Digital to Analog Converter (DAC)

Last Answer : Digital to Analog Converter (DAC) Digital means binary (1 0) and 1 and 0 may be true and false or on and off or high and low. Analog means continuous signal or information ... wave. Phase Shift Keying (PSK) is transmit digital data by changing the phase of carrier wave.

what is Cuk converter?

Description : what is Cuk converter and draw its waveforms.

Last Answer : Cuk converter: Cuk converter is the series combination of boost and the buck converter. The Cuk converter is the DC to DC converter whose output voltage is greater than or less the than the input ... controlling the switch duty cycle the output voltage can be controlled.

How to convert flv format to avi format?

Description : How to convert flv format to avi format?

Last Answer : answer:Lots of different software can do this. I personally use Freemake. www.freeemake.com

what kind of voltage converter do I Need To Run A Clothes Dryer When I Just Have Standard 110 voltage In My Home ?

Description : what kind of voltage converter do I Need To Run A Clothes Dryer When I Just Have Standard 110 voltage In My Home ?

Last Answer : A step down converter will convert the voltage from 220/230 volts to 110 volts. Converters are labeled to display their capabilities, such as "110V to 220V Converter". Read the instruction manual for ... a step down converter after discussing the plug type and voltage found in the owner's manual.

The first converter is also known by what other name?

Description : The first converter is also known by what other name?

Last Answer : Front end.

The number of electrical degrees ‘passed through’ in one revolution of a 6-pole synchronous alternator is:

Description : The number of electrical degrees ‘passed through’ in one revolution of a 6-pole synchronous alternator is: A) 360 degree B) 720 degree C) 1080 degree D) 2160 degree

Last Answer : 1080

The active power of a synchronous generator can be varied mainly by

Description : The active power of a synchronous generator can be varied mainly by (a) changing field excitation (b) changing of prime mover speed (c) both (a) and (b) (d) none of the above

Last Answer : C

A 100 MVA, 11 KV, 3-phase, 50 Hz, 8—pole synchronous generator has an inertia constant H equal to

Description : A 100 MVA, 11 KV, 3-phase, 50 Hz, 8—pole synchronous generator has an inertia constant H equal to 4 seconds. The stored energy in the rotor of the generator at synchronous speed will be  A) 100 MJ B) 400 MJ C) 800 MJ D) 12.5 MJ

Last Answer : 800

A cylindrical rotor synchronous motor is switched on to the supply with its field windings shorted on

Description : A cylindrical rotor synchronous motor is switched on to the supply with its field windings shorted on themselves, the motor will .  A) Not start B) Start but will not run at synchronous speed C) Start as an induction motor and then run as a synchronous motor D) Start and run as a synchronous motor

Last Answer : A cylindrical rotor synchronous motor is switched on to the supply with its field windings shorted on themselves, the motor will Start but will not run at synchronous speed

A stand alone engine driven synchronous generator is feeding a partly inductive load. A capacitor is now

Description : A stand alone engine driven synchronous generator is feeding a partly inductive load. A capacitor is now connected across the load to completely nullify the inductive current. For this operating condition.  ... left unaltered (D) the field current has to be reduced and fuel input left unaltered

Last Answer : A stand alone engine driven synchronous generator is feeding a partly inductive load. A capacitor is now connected across the load to completely nullify the inductive current. For this operating condition.  the field current has to be reduced and fuel input left unaltered

A 500 MW, 3-phase, Y-connected synchronous generator has a rated voltage of 21.5 kV at 0.85 p.f. The line

Description : A 500 MW, 3-phase, Y-connected synchronous generator has a rated voltage of 21.5 kV at 0.85 p.f. The line current when operating at full load rated conditions will be  (A) 13.43 kA (B) 15.79 kA (C) 23.25 kA (D) 27.36 kA

Last Answer : A 500 MW, 3-phase, Y-connected synchronous generator has a rated voltage of 21.5 kV at 0.85 p.f. The line current when operating at full load rated conditions will be 15.79 kA

In relation to the synchronous machines, which on of the following statements is false ?

Description : In relation to the synchronous machines, which on of the following statements is false ?  (A) In salient pole machines, the direct-axis synchronous reactance is greater than the quadrature- ... motor represents the variation in the armature current with field excitation, at a given output power.

Last Answer : In relation to the synchronous machines, which on of the following statements is false ?  (A) In salient pole machines, the direct-axis synchronous reactance is greater than the quadrature- ... motor represents the variation in the armature current with field excitation, at a given output power.

A synchronous generator is feeding a zero power factor (lagging) load at rated current. The armature reaction

Description : A synchronous generator is feeding a zero power factor (lagging) load at rated current. The armature reaction is  (A) magnetizing (B) demagnetizing (C) cross-magnetizing (D) ineffective

Last Answer : A synchronous generator is feeding a zero power factor (lagging) load at rated current. The armature reaction is demagnetizing 

A 100 kVA, 415 V(line), star-connected synchronous machine generates rated open circuit voltage of 415 V

Description : A 100 kVA, 415 V(line), star-connected synchronous machine generates rated open circuit voltage of 415 V at a field current of 15 A. The short circuit armature current at a field current of 10 A is equal to the ... unit saturated synchronous reactance is  (A) 1.731 (B) 1.5 (C) 0.666 (D) 0.577

Last Answer : 0.6

A three phase, salient pole synchronous motor is connected to an infinite bus. It is operated at no load a

Description : A three phase, salient pole synchronous motor is connected to an infinite bus. It is operated at no load a normal excitation. The field excitation of the motor is first reduced to zero ... First increases and then decreases steeply (C) First decreases and then increases steeply (D) Remains constant

Last Answer : B

The angle δ in the swing equation of a synchronous generator is the

Description : The angle δ in the swing equation of a synchronous generator is the  (A) angle between stator voltage and current (B) angular displacement of the rotor with respect to the stator (C) angular ... (D) angular displacement of an axis fixed to the rotor with respect to a synchronously rotating axis

Last Answer : The angle δ in the swing equation of a synchronous generator is the angular displacement of an axis fixed to the rotor with respect to a synchronously rotating axis

For a fault at the terminals of a synchronous generator, the fault current is maximum for a

Description : For a fault at the terminals of a synchronous generator, the fault current is maximum for a  A) 3-phase fault B) 3-phase to ground fault C) Line to ground fault D) Line to line fault

Last Answer : C) Line to ground fault

A 500 MVA, 11 KV synchronous generator has 0.2 p.u. synchronous reactance. The p.u. synchronous reactance

Description : A 500 MVA, 11 KV synchronous generator has 0.2 p.u. synchronous reactance. The p.u. synchronous reactance on the base values of 100 MVA and 22 KV is  A) 0.16 B) 0.01 C) 4.0 D) 0.25

Last Answer : A 500 MVA, 11 KV synchronous generator has 0.2 p.u. synchronous reactance. The p.u. synchronous reactance on the base values of 100 MVA and 22 KV is 0.01

During hunting of synchronous motor

Description : During hunting of synchronous motor  A) Negative phase sequence currents are generated B) Harmonics are developed in the armature current C) Damper bars develop torque D) Field excitation increases 

Last Answer : During hunting of synchronous motor Damper bars develop torque

Slip-rings in a synchronous motor carry?

Last Answer : Slip-rings in a synchronous motor carry direct current.

To limit the operating temperature an electrical machine should have proper?

Last Answer : To limit the operating temperature an electrical machine should have proper current rating.

The efficiency of a properly designed synchronous motor will usually fall in range?

Last Answer : The efficiency of a properly designed synchronous motor will usually fall in range 85 to 95%.

A synchronous motor has better power factor as compared to that of an equivalent induction motor...

Description : A synchronous motor has better power factor as compared to that of an equivalent induction motor. This is mainly because?

Last Answer : A synchronous motor has better power factor as compared to that of an equivalent induction motor. This is mainly because stator supply is not required to produce magnetic field.