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A person purchases 10 used generators at Rs. 2,000 each. Accessories of Rs. 5,000 were used to repair and paint the generators. He was able to sell 6 generators at Rs. 2,500 each but incurred a loss of 10% in the whole deal. Find the selling price of each generator and loss percentage on each generator of remaining generators.
A power system has three synchronous generators. The turbine-governor characteristics corresponding to the generators are P1 = 50(50 - f), P2 = 100(51 - f), P3 = 150(52 - f) Where, f denotes the system frequency in Hz, and P1, P2, P3 are the power outputs of the turbines in MW. Assuming generators and transmission network to be lossless, the system frequency for a load of 700 MW is
Two statements are given, followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: Some candles are bulbs Some bulbs are generators Conclusions: I. Some candles are generators II. All candles are generators
Polarity of interpoles is one pole ahead in the direction of armature rotation in _____________
Two generators are running in parallel. One of the generators may run as motor for which of the following reasons?
Three synchronous generators, each of which is rated to 100 MVA, 11 KV, have an impedance per unit of 0.15. If all three generators are replaced by a single equivalent generator, what will be the effective per unit impedance of each generator?
Commercially, which of the following generators is called turbo-alternators or turbo-generators?
A manufacturing firm maintains one product assembly line to produce signal generators. Weekly demand for the generators is 35 units. The line operates for 7 hours per day, 5 days per week. What is the maximum production time per unit in hours required of the line to meet the demand?
Why interpoles are used in dc machines?
Why are tapered interpoles used in large DC electric machines?