When a UJT is used for triggering an SCR, then the wave shape of voltage obtained from the UJT circuit will be ____________(a) Square(b) Pulse(c) Trapezoidal(d) Saw-toothThis question was posed to me by my college professor while I was bunking the class.My doubt stems from DC Motors in portion Characteristics of DC & AC Motors of Electric Drives

When a UJT is used for triggering an SCR, then the wave shape of volta

1.	When a UJT is used for triggering an SCR, then the wave shape of voltage obtained from the UJT circuit will be ____________(a) Square(b) Pulse(c) Trapezoidal(d) Saw-toothThis question was posed to me by my college professor while I was bunking the class.My doubt stems from DC Motors in portion Characteristics of DC & AC Motors of Electric Drives
Answer» The correct choice is (b) Pulse The BEST explanation: UJT relaxation oscillator using RC CIRCUIT is used for SCR triggering and the wave SHAPE obtained is an exponentially decaying pulse. So, we can say pulse waveform is obtained.

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