Please Log in or Register for more.


77 views

1 Answer

Answer :

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

Like 0 like

Please log in or register to answer this question.

Related Questions


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.

Show More

891 views 1 answer







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.

Show More

7 views 1 answer







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)

Show More

7 views 1 answer







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.

Show More

4 views 1 answer








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

Show More

101 views 1 answer








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

Show More

89 views 1 answer








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

Show More

71 views 1 answer








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

Show More

67 views 1 answer








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.

Show More

712 views 1 answer







Which type of heater is cheapest to run?

Show More

64 views 0 answers







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.

Show More

6 views 1 answer







Draw circuit diagram of symmetrical configuration of bridge converter.
Last Answer : circuit diagram of symmetrical configuration of bridge converter

Show More

83 views 1 answer







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. 

Show More

906 views 1 answer







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. 

Show More

3.0k views 2 answers







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

Show More

201 views 1 answer







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

Show More

515 views 2 answers







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

Show More

150 views 1 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 (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

Show More

183 views 1 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 (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

Show More

177 views 1 answer







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

Show More

136 views 1 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 (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

Show More

173 views 1 answer







Describe the gate circuit for a single phase full converter.

Show More

71 views 0 answers







Why the power factor of semiconverter is better than full converter?
Last Answer : Power factor of semiconverter is better than full converter

Show More

2.9k views 1 answer







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.

Show More

143 views 1 answer







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.

Show More

258 views 1 answer







single phase full converter
Last Answer : single phase full converter

Show More

121 views 1 answer







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.

Show More

177 views 1 answer







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.

Show More

348 views 1 answer







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.

Show More

3.6k views 1 answer







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.

Show More

200 views 1 answer







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.

Show More

503 views 1 answer







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

Show More

1 view 1 answer







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.

Show More

0 views 1 answer







The first converter is also known by what other name?
Last Answer : Front end.

Show More

2 views 1 answer







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

Show More

12.8k views 5 answers







The ratio of air-gap line voltage from open-circuit characteristic and armature current from short-circuit characteristic for a particular value of the field current in a synchronous ... reactance (B) synchronous impedance (C) unsaturated synchronous reactance (D) unsaturated synchronous impedance 

Show More

103 views 0 answers







When two synchronous machines are connected in parallel the synchronizing power tends to (A) accelerate the faster machine (B) retard the faster machine (C) retards the slower machine (D) pull the faster machine out of step

Show More

122 views 0 answers







The power factor of a synchronous machine is controlled by (A) connected load (B) generated voltage (C) field current (D) load angle 

Show More

70 views 0 answers







Two 3-phase synchronous generators with reactance 60% and 40% feed a fault current of 1200 A up to short-circuit fault point. The short-circuit current is (A) 1200 A (B) 2400 A (C) 4000 A (D) 5000 A 

Show More

72 views 0 answers







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

Show More

706 views 1 answer







A pair of synchronous machines on the same shaft may be used to generate power at 60 Hz from given source of power at 50 Hz. Using minimum number of poles for both the machines, the synchronous speed will be (a) 500 r.p.m. (b) 600 r.p.m. (c) 1000 r.p.m. (d) 1200 r.p.m. 

Show More

76 views 0 answers







A salient pole synchronous motor is running at no load. Its field current is switched off, the motor will (a) come to stop. (b) continue to run at synch. speed. (c) continue to run at a speed slightly less than synch. speed. (d) continue to run at a speed slightly more than the synch. speed. 

Show More

2.7k views 0 answers







Armature reaction mmf and leakage reactance of a synchronous machine are determined by (a) open circuit test and short circuit test (b) open circuit test and zero power factor test (c) zero power factor test only (d) short circuit test only  

Show More

164 views 0 answers







A synchronous motor works as synchronous condenser when it operates (a) under excited with leading power factor (b) normal excited with unity power factor (c) over excited with leading power factor (d) over excited with lagging power factor 

Show More

53 views 0 answers







Use of double line to transmit power is helpful in (a) increasing power capability (b) increasing stability (c) both (a) and (b) (d) decreasing power capability 

Show More

55 views 0 answers







A suspension insulator string has three units with ground capacitance of 0.2 C and self capacitance of C. Its string efficiency is (a) 75% (b) 78% (c) 80% (d) 85%

Show More

123 views 0 answers







In a synchronous motor, if β is impedance angle and δ is torque angle, then the maximum developed mechanical power is obtained when (a) δ = 180 – 2β (b) δ = 2β (c) δ = 180 – β (d) δ = β  

Show More

95 views 0 answers







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

Show More

1.3k views 2 answers







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

Show More

320 views 1 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.  ... 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

Show More

155 views 1 answer






Show More⇦ PreviousNext ⇨