ECE :: Power Electronics
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In a semi converter feeding a resistive load, the firing angle is a. Each thyristor conducts for
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Between which points does UJT exhibit negative resistance characteristics
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A thyristor has maximum allowable junction temperature of 110° C and the ambient temperature is 40°C, If the maximum internal power dissipation is 50 W, the thermal resistance is
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A single phase electric heater uses phase controlled thyristors. The firing angle is 90°. The degree of heating is
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Which of these commutation methods is used in AC-DC converters?
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When thyristors are connected in series and parallel, it may be necessary to have :
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A single phase half wave regulator uses
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A Shockley diode can be used
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An SCR has a turn on time of 4 μs. The gate pulse should have a duration of about
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In a multiphase chopper, the different choppers operate in
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