Power Electronics Materials used in heat sink should have high thermal conductivity. large surface area. All of these. high melting point. high thermal conductivity. large surface area. All of these. high melting point. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A UJT has ___________. Three pn junctions Two pn junctions One pn junction None of these Three pn junctions Two pn junctions One pn junction None of these ANSWER DOWNLOAD EXAMIANS APP
Power Electronics The capacitance of reversed bised junction J2 in a thyristor is CJ2 = 20 pF and can be assumed to be independant of the off state voltage. The limiting value of the charging current to turn on the thyristor is 16 mA. What is the critical value of dv/dt? 1000 V/µs. 800 V/µs. 600 V/µs. 1200 V/µs. 1000 V/µs. 800 V/µs. 600 V/µs. 1200 V/µs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics A thyristor will be triggered when Vg = 1.5 volt and Ig = 100 mA in the given figure. Calculate the value of R in ohm is 3.714. 65. 60. 37.14. 3.714. 65. 60. 37.14. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics Power transistor are type of IGBTs. MOSFETs. All of above. BJTs. IGBTs. MOSFETs. All of above. BJTs. ANSWER DOWNLOAD EXAMIANS APP
Power Electronics When a large surge current of very short duration flows through a thyristor then which one of the following device will operate to protect the thyristor ? Fast acting current limiting device (FACL fuse). CB. Snubber circuit. Voltage clamping device. Fast acting current limiting device (FACL fuse). CB. Snubber circuit. Voltage clamping device. ANSWER DOWNLOAD EXAMIANS APP
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