Electrical Engineering  ThreePhase Systems in Power Applications  Discussion
Discussion :: ThreePhase Systems in Power Applications  General Questions (Q.No.1)
1. 
In a threephase system, the voltages are separated by 
[A]. 
45°  [B]. 
90°  [C]. 
120°  [D]. 
180° 
Answer: Option C
Explanation:
No answer description available for this question.

Siva said:
(Feb 11, 2011)


In 3ph power the phase angle b/w each ph in 120 deg elec. 
Jinesh said:
(Jul 15, 2011)


One rotation of the waveform is 360 deg. So to balance each phase are displaced at 120 deg. 
Gvk said:
(Sep 15, 2011)


In phasor representation of three phase supply the angle b/w each phase will be 120 deg. 
Vinay said:
(Sep 20, 2011)


360/3 Degree phase is equal to 120 Degree. 
Karthikeyan said:
(Oct 1, 2011)


Total phase angle is 360 so each of 120. 
Murugesan said:
(Dec 3, 2011)


Phase difference in.
2 phase =90 degree, 4 phase=90 degree, 3 phase =120 degree. 
Happy Grewal said:
(Dec 12, 2011)


The phase diff is same in 3 phase system so the phase diff is 360/3 Degree phase is equal to 120 Degree. 
Nibha said:
(Jan 11, 2012)


Total=306 and for 3 phase angle the degree will be 360/3=120 degree. 
Ankita said:
(Feb 5, 2012)


One cycle constitutes about 360 degrees angle. So to complete a cycle in a 3 phase individual phases are 120 degree apart from each other. 
Sethupathi said:
(Feb 6, 2012)


In Three phase circuit angle between RYB phases are 120 degree. 
Jitendranath Panda said:
(Jun 27, 2012)


In 3phase system total phase angle 360'.
So difference between two phase 360/3 = 120'. 
Vinod Kumar said:
(Sep 21, 2012)


In 3phase system Totle phase angle is 360. So each have 120 degree. 
Anil said:
(Apr 5, 2013)


Actually three phases are made 120 degree from per phases due to phase difference. 
Saishekar said:
(May 23, 2013)


Single phase 360/1 = 360.
Two phase 360/2 = 180.
3 phase 360/3 = 120. 
Jose said:
(Jun 17, 2013)


Cycle = 360 degree and 120 degree by phases. 
Subhash Prajapat said:
(Jul 6, 2013)


Total 360. And for 3 phase angle the degree will be 360/3 = 120 degree. 
Chhabila said:
(Jul 11, 2013)


In a balanced system the three phase voltages or currents separated by a phase difference of 120 degree. 
Nithyashri said:
(Aug 12, 2013)


ANGLE BR = 120.
ANGLE RY = 120.
ANGLE RB = 120.
TOTAL = 360. 
Naval said:
(Jan 27, 2014)


Three phase 360, So one phase 120. 
Ramadevi said:
(Feb 5, 2014)


Each phase having 120 degree. Answer is C. 
S.Hari said:
(May 2, 2014)


In alternator the three phase windings are set in 120 degrees displacement each other. 
Aaron S Mulwanda said:
(Aug 10, 2014)


The phase difference in 3 phase power system is the same. A complete circle has 360deg. Therefore, the voltages are separated by 120deg, 360/3=120. 
Hemanth said:
(Sep 3, 2014)


For the phase circuits other than 1 and 2. The phase angle can be calculated by using the formula "360/n".
Where "n" is the number of the phases.
In case of 2  phase the angle is 90 degrees. 
Rajiv Gandhi said:
(Nov 5, 2014)


Each phase placed on 120 degree phase angle. 
Jagadish said:
(Mar 14, 2015)


In 3phase s/m voltage are separate by 120. 
Naresh said:
(Nov 13, 2015)


Total 3 phase 360 for each phase 120. 
Dharmendra Kumar Singh said:
(Jul 31, 2016)


Total take complete in one rotation then formed 360 if division by 3 then come 120 so we take phase difference in three phase 120. 
Mukesh Kumar Ghotra Bemoth said:
(Nov 7, 2016)


In three phase system the phase sequence with angle 120°. 
G.Mounika said:
(Nov 16, 2016)


Nice answer with the clear explanation, Thank you all. 
Rupesh Raaz said:
(Dec 18, 2016)


In 3phase balaced s/s, the 3phase are 120' part from each other.
Since, phase voltage are 120' appart to each other in a similarly mannar, the line voltage will be 120' appart to each other. 
Shankar Yadav said:
(Mar 10, 2017)


Total RYB angle is 360.
360/3 then each phase is 120. 
Siddu said:
(Aug 29, 2017)


Three phases are R Y B and they are differed by an angle of 120 degree. 
Shadan said:
(Mar 13, 2018)


1phase =how many degree? 
Shyam said:
(Jan 30, 2019)


In three phase, each phase is displaced in 120°s; elec. 