Hydroelectric Power Plants Interview Questions and Answers: 1. What is power generating station ? Ans. Power generation station generates electrical energy by conversion of energy available in different forms from natural sources such as kinetic…
Electrical Energy Interview Questions and Answers: 1. What is the per capita consumption of electricity in India ? Ans. 631 kWh in 2006. 2. Why electrical energy is more useful than other forms of energy…
Frequency Stability of Oscillator: An oscillator having initially been set at a particular frequency does not maintain its initial frequency, but instead drift and wander about in frequency, sometimes uniformly in one direction, sometimes quite…
Attenuation and  Distortion of Travelling Waves: As a Travelling Waves moves along a line, it suffers both attenuation and distortion. The decrease in the magnitude of the wave as it propagates along the line is…
Engineering Physics Interview Questions and Answers: 1. Define stress on a body. Ans. The internal force developed per unit area in the body during the application of external force or load is called stress. Within…
Low Power Factor: The Low Power Factor plays an importance role in ac. circuits since power consumed depends upon this factor. It is clear from above that for fixed power and voltage, the load current…
Balanced Earth Fault Protection: In small-size alternators, the neutral ends of the three-phase windings are often connected internally to a single terminal. Therefore, it is not possible to use Merz-Price circulating current principle described above…
Difference between Static Relay and Electromagnetic Relay: The difference between static relay and electromagnetic relay is given in table below Sl no Static Relay Electromagnetic Relay 1 It consumes less power. It consumes more power.…
Reactive Power with Wattmeter: We have already seen earlier that the difference between higher reading wattmeter and lower reading wattmeter yields VLIL sin Φ. So, the total reactive power = √3 VLIL sin Φ. Reactive…
Two pulse bridge converter: A two pulse bridge converter is achieved as shown in Fig. 3.22 from two midpoint converters. They are connected in series on the dc side and in parallel on the ac…
