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For an SCR gate cathode characteristic is a straight line of 130. For triggered source volume of 15 V and allowable gate power dissipation of 0.5 W compute the gate source resistance?
11.19 ohm
111.9 ohm
108 ohm
115 ohm
11.19 ohm
111.9 ohm
108 ohm
115 ohm
Answer
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Power Electronics
The UJT may be used as ___________.
A sawtooth generator
Am amplifier
A rectifier
None of these
A sawtooth generator
Am amplifier
A rectifier
None of these
Answer
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Power Electronics
A thyristor can termed as
Both a and B.
Square wave switch.
AC switch.
DC switch.
Both a and B.
Square wave switch.
AC switch.
DC switch.
Answer
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Power Electronics
Spread time is defined as the interval during which
anode current rises from 90 % to its final value.
anode current rises from 10 % to 90 % of its final value.
anode voltage drops from 10 % of its initial value to zero.
both (A) and (B).
anode current rises from 90 % to its final value.
anode current rises from 10 % to 90 % of its final value.
anode voltage drops from 10 % of its initial value to zero.
both (A) and (B).
Answer
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Power Electronics
Materials used in heat sink should have
All of these.
high melting point.
large surface area.
high thermal conductivity.
All of these.
high melting point.
large surface area.
high thermal conductivity.
Answer
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Power Electronics
A single phase full bridge inverter can operated in load commutation mode in case load consist of
RLC overdamped.
RLC critically damped.
RLC underdamped.
RL.
RLC overdamped.
RLC critically damped.
RLC underdamped.
RL.
Answer
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