Electronic Devices and Circuits - Engineering

Q1:

The turn on time of an SCR is 5 micro second. Its trigger pulse should have

A short rise time with pulse width = 2.5 μs

B long rise time with pulse width = 3 μs

C short rise time with pulse width = 4 μs

D long rise time with pulse width = 4 μs

ANS:C - short rise time with pulse width = 4 μs

Please explain the solution.