Resistor Power Rating Chart [Wattage vs Dimension Sizing]

The actual size of any resistor depends on its wattage rating. The higher its size, the higher the watts it can handle. The chart below presents the power rating of different resistors and their sizes. Remember that actual size may vary. 1/8 Watt Resistor – 1.8 x 3 x 28: It handles 13.88 mA when connected … Read more

Power Systems: 3 Types of Switchgear on the Basis of Voltage Level

Switchgear is often classified on the basis of voltage level for which it is designed. 3 Types of switchgear in this regard are: LV Switchgear – Rated for voltage under 1 kV MV Switchgear – Rated for voltage under 36 kV HV Switchgear – Rated for voltage above 36 kV Other PSP Questions: Justify the … Read more

What is Switchgear – Explained for Beginners

Question: What do you mean by switchgear? Answer: The equipment used for switching, controlling, protecting, and isolating electronic equipment. The Electrical Switchgear is a generic term that represents all components and equipment which is involved in: Control Protection Isolation Must read: LV Switchgear components List of components in switchgear: Annunciator Bus bar Circuit breaker Control … Read more

Synchronous Motor MCQs Part 1 with Explanatory Answer

Filed Under: Synchronous Motor MCQs Speed regulation of synchronous motor is Speed regulation of synchronous motor is: 0 5 89 100 Correct answer: 1. 0 Explanation: Speed regulation of machine is defined as the ratio: SR = {S (NL) – S (FL)} / S(FL) where S (NL) = Speed of motor at no load S … Read more

Top 10 Transformer Questions for Electrical Engineering Interviews

The transformer is an electrical device which steps up and steps down the ac voltages. Given below are top 10 transformer questions for electrical engineering interviews. Question 1: Why short circuit test is performed on transformers? Answer: The short circuit test is performed for calculating the copper losses. Question 2: Why open circuit test is … Read more

Power Systems: 8 Types of Electrical Bus Bar Connections

Electrical Bus bars is the structure which carries a huge amount of power. A bus bar is the most important structure in the substation where power is gathered for further substitution. Depending on the voltage level, reliability and flexibility, a bus bar can be arranged in different configurations. Given below is the list of 8 different … Read more

A nuclear power plant uses nuclear energy for generating electrical power. This article presents 10 advantages and disadvantages of the nuclear power plant. Advantages of Nuclear Power Plant Economic base load production: Nuclear power plant is an economic source to be used as a baseload power plant. The running cost is smaller than diesel power … Read more

Types of Hydroelectric Power Plants on the Basis of Head

Question: Explain the classification of hydroelectric power plants on the basis of head? OR Question: How many types of dams are there on the basis of head height? Answer: On the basis of the head the dams are divided into three classes. Type Head Low head < 30 m Medium head 30-100 m High head … Read more

Forebay in Hydroelectric power plant

The forebay is a regulating reservoir which stores water under reduced load conditions and provides water when the load increases. Details and Construction The forebay is a wide water body whose major function is storage of water. Depending on low, medium, or high heads its construction and working can be different. Its design and location … Read more

Types of Boilers in Thermal Power Plant – Water tube vs Fire tube

A boiler in thermal power plant utilizes the heat for converting water into steam. Steam boilers are often classified into two types. Water tube boilers Fire tube boilers In water tube boilers the water flows through tubes and hot combustion gases flow over these tubes. Whereas in fire tube boilers the tubes are surrounded by … Read more