146. For an SCR the total turn-on time consists of i) Delay time ii) Rise time and the iii) Spread time The spread time interval depends upon a) the value of gate current b) junction temperature c) area of the cathode d) area of the anode
146. For an SCR the total turn-on time consists of i) Delay time ii) Rise time and the iii) Spread time The spread time interval depends upon a) the value of gate current b) junction temperature c) area of the cathode d) area of the anode
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Answer: c
Explanation: During the spread time the conduction starts spreading all over the SCR
cathode cross-section structure, which depends upon the structure of the gate &
cathode. Higher the cathode area more is the time required for the charges to spread all
over
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