1
You visited us
1
times! Enjoying our articles?
Unlock Full Access!
Byju's Answer
Other
Other
3-Phase Full Wave Rectifiers
A 3-phase; M-...
Question
A 3-phase; M-3 converter is operated from 3-phase, 230V, 50 Hz supply with load resistance R = 10
Ω
. If average output voltage is 50% of the maximum possible output voltage, then the rectification efficiency in percentage is ___
54.93
Open in App
Solution
The correct option is
A
54.93
Let,
α
>
30
o
V
0
=
3
V
m
p
2
π
[
1
+
c
o
s
(
α
+
30
o
)
]
Maximum possible output voltage
V
m
=
3
V
m
l
2
π
3
V
m
l
2
π
√
3
(
1
+
c
o
s
(
α
+
30
o
)
)
=
(
3
V
m
l
2
R
)
×
1
2
α
=
67.7
o
V
o
r
=
V
m
l
2
√
π
[
(
5
π
6
−
α
)
+
1
2
s
i
n
(
2
α
+
π
3
)
]
1
/
2
=
√
2
×
230
2
√
π
[
(
5
π
6
−
67.7
×
180
)
+
1
2
s
i
n
(
2
×
67.7
+
60
o
)
]
1
/
2
= 104.76 V
I
o
r
=
104.765
10
=
10.47
A
Average output current,
I
o
=
V
0
R
=
3
V
m
l
2
π
×
2
×
1
10
=
3
×
230
√
2
4
π
×
10
=
7.76
A
Rectification efficiency =
V
0
I
o
V
o
r
I
o
r
=
77.65
×
7.76
104.76
×
10.47
=
54.93
%
Suggest Corrections
1
Similar questions
Q.
A single phase semiconverter is supplying a resistive load of 100
Ω
from its dc side. The converter is operated from 230 V, 50 Hz ac supply. If the average output is 25% of the maximum possible average output voltage, then value of ratio of rms load current of converter to average load current will be
Q.
A three-phase half wave converter is operated from a three phase star- connected 400 V, 50 Hz supply and load resistance is R = 15
Ω
. If it is required to obtain an average output voltage of 60% of the maximum possible output voltage, then the delay angle
α
in degrees is
Q.
A single-phase semi-converter, connected to 230 V, 50 Hz is feeding a load of resistance R = 10
Ω
in series with a large inductance that makes the load current ripple free. For a firing angle of
45
o
, the value of percentage rectification efficiency will be
Q.
A three phase fully-controlled bridge converter is connected to 415 V, 60 Hz supply, having 3 reactance of 0.3
Ω
per phase and resistance of 0.05
Ω
/phase. If the load current is 60 A, then the voltage drop due to commutation is ______
Q.
A 3-phase semi converter feeds power to a resistive load of 10
Ω
. For a firing angle of
30
0
, the load takes 5 kW. The per phase supply voltage is _______V(rms).
View More
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
Related Videos
3-Phase Full Wave Rectifiers
OTHER
Watch in App
Explore more
3-Phase Full Wave Rectifiers
Other Other
Join BYJU'S Learning Program
Grade/Exam
1st Grade
2nd Grade
3rd Grade
4th Grade
5th Grade
6th grade
7th grade
8th Grade
9th Grade
10th Grade
11th Grade
12th Grade
Submit
AI Tutor
Textbooks
Question Papers
Install app