Interconnected Systems Interview Questions and Answers: 1. Why are alternators put in parallel ? Ans. For high efficiency of operation, reliability, convenience and economy in maintenance and repair and possibility…
Combined Operation of Power Plants Interview Questions and Answers: 1. Why is it necessary to operate hydro and steam plants in combination ? Ans. It is necessary to operate hydro…
Basic Electronics Interview Questions and Answers: 1. What is difference between active and passive devices? Ans. In passive devices, the time average power delivered to the device over an infinite time…
Electron Tubes Interview Questions and Answers: 1. What is an electron tube? Ans. An electron tube is an electronic device in which conduction of electrons takes place in an evacuated or…
Semiconductor Physics Interview Questions and Answers: 1. Why copper is a good conductor? Ans. In case of copper the electrons in the conduction band are very large. An electron in the…
PN Junction Diode Interview Questions and Answers: 1. What is a P-N junction? Ans. The contact surface between the layers of P-type and N-type semiconductor pieces placed together so as to…
Zener Diode Interview Questions and Answers: 1. What is a zener diode? Ans. Zener diode, also sometimes known as breakdown diode, is like an ordinary P-N junction diode except that it…
Bipolar Junction Transistors (BJTs) Interview Questions and Answers: 1. Explain why BJT is a polar device. Ans. Since both of the charge carriers (electrons and well as holes) are involved in…