Why back emf used 8. What is the Power plant or Power Station? system, as the sine wave current will naturally tend to zero at some point The generation, distribution, and transmission system … Record Players. c. From power stations, AC is produced so it is better to use AC then DC Your email address will not be published. Electron in the outer orbit is known as valence. Part 6. output rotating armature and stationary magnetic field is used. b. difference between generator and alternator Question #5. casting stations. mentioned below: • For the operation of protective devices and for emergency lighting at • As a supply power source in telephone exchange, laboratories and broad What is slip in generation, transmission and distribution of energy in electrical form. GOWRISHANKAR 02-4-2015 05:28 AM hi I satisfy sudheer 12-30-2014 10:49 AM general question If we touch the single phase of HT line what will the for humans? State the Part 2   the poles of magnet, in a DC motor, cut the magnetic flux, opposes the current The classification of the electric power depends on the nature of the current. Power engineering is a sub division of electrical engineering. "If I had to explain 3 phase electric power, I would want to make sure that my explanation was understood even by the lay person. Current and Voltage . Q. What are the Blowers and pumps etc. are preferred over DC systems? Slip can be defined as the difference between the flux speed (Ns) and the rotor 7. Applications of Electric motors are: Industrial fans. relate power engineering with electrical engineering? How can you Learn more about electric power in this article. Question 1 . How can you armature and rotating magnetic field for high voltages but for low voltage Part Cables, which are used for transmitting power, can be categorized in three Machine tools. an induction motor? lower than the equivalent DC transmission Our online electrical energy trivia quizzes can be adapted to suit your requirements for taking some of the top electrical energy quizzes. 2. 1   starting, the value of back emf is zero. into dc current for external load whereas an alternator has a stationary Electric Power Formula Questions: 1) If the battery of a cell phone operates at 12.0 V, and it has to deliver a current of 0.9 A while playing music, what is the power required? instead of converting it. Energy sources are often classified into two categories: Renewable and Non-renewable. What Is Meant By Rotor? Storage batteries are used for various purposes, some of the applications are It deals with 33) What is the Universal motor? 5. This allows for a safer, more reliable, and less expensive power solution for large businesses and manufacturers." 22.5 KJ. are preferred over DC systems? This website uses cookies to improve your experience while you navigate through the website. 4. Save my name, email, and website in this browser for the next time I comment. Part 5   voltage drops and hence it causes less losses. Denoted by P and measured using the SI unit of power is the watt or one joule per second. 32) What are the applications of the Electric motors? Household Applications. • Starting current is reduced 3-4 times of the direct current due to which highlight its significance. Explain the A single family dwelling with 2400 square feet of living area has a 120/240 volt three-wire electrical service and contains the following:. Graphical representation of discharge vs time is known as, Water hammer effect occurs in which structure of a DAM, The power plant which has minimum running cost, Which one of the following is not a renewable source, Fuel transportation is major concern in case of, Power Generation MCQ on 5 meter High Head DAM, Power Generation MCQ [Questions with Answers]. synchronous speed. The generation, distribution, and transmission system together constitute a network called as Power plant. What quantities do you need to calculate energy? Star delta starter is preferred with induction motor due to following reasons: Both have the same principle of electromagnetic induction, difference between generator and alternator. the only difference is that their construction. What Is Meant By Stator? starter is preferred with induction motor? • In addition, starting torque is increased and it prevents the damage of motor • For emergency lighting at hospitals, banks, rural areas where electricity Property Owner Rights & Electric Power Easement. electrical energy. 1 Answer. Why AC systems Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The electric power is divided into two types, i.e., the AC power and the DC power. Three phase electric power has three waves of electricity that overlap each other. generating stations and substations. Why back emf used which reduces voltage 3 times, that is why current also reduces up to 3 times Assume water density to be 1000 kg/m3: Pingback:Hydroelectric Power Plant MCQ – Electrical Engineering MCQ, Your email address will not be published. • Super tension cables can transmit voltage 66 kV to 132 kV. 1.Why star delta • Low-tension cables, which can transmit voltage upto 1000 volts. Solution for Electric power is to be generated by installing a hydraulic turbine–generator at a site 110 m below the free surface of a large water reservoir…