b Explanation: Pilot SCR is an SCR which is fired which activates the firing circuit and fires the main SCR.
b
Explanation: Pilot SCR is an SCR which is fired which activates the firing circuit and fires
the main SCR.
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Sorry, you do not have permission to ask a question, You must login to ask a question. Please subscribe to paid membership
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
b Explanation: Pilot SCR is an SCR which is fired which activates the firing circuit and fires the main SCR.
b
Explanation: Pilot SCR is an SCR which is fired which activates the firing circuit and fires
the main SCR.
Answer: c Explanation: PUT is Programmable Unijunction Transistor which is a p-n-p-n device just like the SCR with its gate connected to the n-type material.
Answer: c
Explanation: PUT is Programmable Unijunction Transistor which is a p-n-p-n device just
like the SCR with its gate connected to the n-type material.
Answer: d Explanation: As the gate characteristics is a plot of Ig vs Vg consisting of two curves one for the maximum values & other for the minimum the area between them gives the total average gate power dissipation. (A very important parameter in designing of the triggering circuits).
Answer: d
Explanation: As the gate characteristics is a plot of Ig vs Vg consisting of two curves one
for the maximum values & other for the minimum the area between them gives the total
average gate power dissipation. (A very important parameter in designing of the
triggering circuits).
Answer: d Explanation: a) & c) are used to turn on the device, b) will damage the SCR.
Answer: d
Explanation: a) & c) are used to turn on the device, b) will damage the SCR.
Answer: c Explanation: An SCR (silicon controlled rectifier) is a four layer p-n-p-n type device
Answer: c
Explanation: An SCR (silicon controlled rectifier) is a four layer p-n-p-n type device
a Explanation: Crowbar protection circuits have high surge current capabilities.
a
Explanation: Crowbar protection circuits have high surge current capabilities.
Answer: c Explanation: As soon as the switch is closed, C acts like a S.C & the voltage equation gives, Vs = (Rs + Rl) I + L di/dt Solve the above D.E. di/dt = Vs/L e-t/τ di/dt is maximum at t = 0, substitute the above given values & find L
Answer: c
Explanation: As soon as the switch is closed, C acts like a S.C & the voltage equation
gives,
Vs = (Rs + Rl) I + L di/dt
Solve the above D.E.
di/dt = Vs/L e-t/τ
di/dt is maximum at t = 0, substitute the above given values & find L
b Explanation: By placing the di/dt inductor (L) in series with the load, the change in the anode current can be limited to a small value.
b
Explanation: By placing the di/dt inductor (L) in series with the load, the change in the
anode current can be limited to a small value.
c Explanation: PUT is Programmable Unijunction Transistor which is a p-n-p-n device just like the SCR with its gate connected to the n-type material.
c
See lessExplanation: PUT is Programmable Unijunction Transistor which is a p-n-p-n device just
like the SCR with its gate connected to the n-type material.