91. |
Each diode of a 3-phase, 6-pulse (full-wave) bridge diode rectifier conducts for
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Answer:
Option (b) |
92. |
In a 3-phase half-wave diode rectifier, if per phase input voltage is 200 V, then the average output voltage is
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Answer:
Option (a) |
93. |
For a 3-phase, six-pulse diode rectifier, the average output voltage in terms of maximum value of line voltage Vm is
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Answer:
Option (b) |
94. |
In a 3-phase half-wave rectifier, dc output voltage is 230 V. The peak inverse voltage across each diode is
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Answer:
Option (a) |
95. |
In a 3-phase semi-converter, for firing angle less than or equal to 60°, freewheeling diode conducts for
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Answer:
Option (d) |
96. |
In a 3-phase full converter, three SCRs pertaining to one group are fired at an interval of
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Answer:
Option (d) |
97. |
For a single-phase phase-controlled rectifier, with a freewheeling diode across the load,
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Answer:
Option (b) |
98. |
In a single-phase full converter, if load current is I and ripple free, than average thyristor current is
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Answer:
Option (a) |
99. |
In a 3-phase full converter, if load current is I and ripple free, then average thyristor current is
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Answer:
Option (b) |
100. |
A 3~phase full converter has an average output voltage of 200 V for zero degree firing angle and for resistive load. For a firing angle of 90 degree, the output voltage would be
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Answer:
Option (d) |