Transmission of Waves at Transition Points: Whenever there is an abrupt change in the parameters of a transmission line, such as an open circuit or a termination, the travelling wave undergoes a transition, part of…
Gate Firing Converters: The firing pulse control unit constitutes the heart of any thyristor power conÂverter. The Gate Firing Converters required by the thyristors are often derived from the digital pulses using a simple buffer…
What is Excess-3 Code? (Definition and Examples) The excess-3 code, abbreviated as XS-3, is an important 4-bit code sometimes used with binary-coded decimal (BCD) numbers. It possesses advantages in certain arithmetic operations. The excess-3 code…
Reversible Drive using Field Reversal: A Reversible Drive using Field Reversal can be realised as shown in Figs. 4.83 and 4.84. In Fig. 4.83, the armature is fed from a two quadrant converter with change…
Static Kramer Drive: The Static Kramer drive system which consists of variable-speed drive system shown in Fig. 11.43 consists of a slipring induction motor and a rectifier-fed dc motor. The machines are connected electrically in…
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 and steam plants in combination…
Types of Power Supply in Electronics: There are two types of Power Supply in Electronics viz. dc supply and ac supply. The voltage or current available from batteries or solar cells is direct in the…
Elements of Transfer Function Synthesis: A transfer function is generally defined to specify the properties of a two port network. Hence Elements of Transfer Function Synthesis is also known as two port synthesis. Consider a…
Braking of DC Motors: Controlled slowing or stopping of a motor and its driven load is as important as starting in many applications (e.g. cranes, traction on a slope to avoid excessive speed, etc.). Braking…
Isolated Induction Generator: An Induction Machine can also work as a generator even if external power supply not available and it is called Isolated Induction Generator. An Isolated Induction Generator feeding a load is shown…
