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What is load and its formula?
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Draw a neat diagram of 1φ half wave controlled converter with RL load. Give its operation.

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A motor has to exert power starting from zero and rising uniformly to 150 HP in 8 mins after which it works at constant power of 100 HP for 5 mins. The motor remains on no load for next 5 mins. The cycle again starts and repeats indefinitely. Determine suitable size of motor.

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What is the purpose of a load bank in electrical system testing and commissioning?

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What is the function of a load shedding scheme based on voltage and frequency measurements?

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There are a Transformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why?

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What is the difference between output impedance and load impedance?

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What is the relationship between characteristic impedance and load impedance?

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What is the difference between impedance and load impedance?

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What is the relationship between the line voltage and the phase voltage in a delta connected load?

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What is the difference between star connected load and delta connected load?

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Plot the chronological load curve and load duration curve. Find the load factor of the plant and energy supplied by the plant in 24 hours.

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Explain how load curves help in the selection of size and number of generating units.

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Classify the hydro-electric plants according to the head and load basis.

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Draw single phase full wave mid-point converter for inductive load. Draw input and output waveforms for it.

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Explain MCB and ELCB with connection diagram supplying single phase load.

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A 500kVA distribution transformer having copper and iron losses of 5kW and 3kW respectively on full load. The transformer is loaded as shown below: Loading (kW) Power Factor (Lag) No. of hours 400 0.8 06 300 0.75 12 100 0.8 03 No load - 03 Calculate the all-day efficiency.

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A 3 phase line of 4 km length delivers 4000 kW at a p.f of 0.8 lagging to a load the resistance and reactance per km of each conductor are 0.2 Ω and 0.5 Ω respectively if the voltage at the supply end is maintained at 11 kV. Calculate the received end voltage and efficiency of line.

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Illustrate the load sharing and isolating technique in transformer to predict energy efficiency.

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An industrial consumer charged with the scheduled tariff of Rs.250 /kVA per month for maximum demand and 150 paisa per unit consumed for load factor of 60% and 80%. Find overall cost per unit at i) unity P.F. ii) 0.9 P.F. consider maximum demand of 50 kVA.

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Make use of load factor and maximum demand tariff to minimize electrical consumption of electrical installation.

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Illustrate Energy conservation in motor by load matching and operating in star mode.

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Explain the relation of V2 and I2 based on the load connected to the transformer.

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State Norton’s theorem and find the current using Norton’s theorem through a load.

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A 3 φ I.M. has synchronous speed of 250rpm and 4% slip at full load. The rotor has a resistance of 0.02Ω/ph and stand still reactance of 0.15Ω/ph. Calculate i) The speed at which max torque is developed. ii) The ratio of maximum to F. L. torque. iii) The ratio of maximum to starting torque.

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A plant consists of two 10 MVA generators of reactance 18% each and two 5 MVA generators of 12% each. All are connected to bus bar to supply a load through three step up transformers of 8 MVA each having reactance of 8%. Determine fault MVA on HV side of any one transformer.

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How do smart grids support load forecasting and management?

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