Physics, 28.07.2019 05:30 Terezagonzalez2271
Westinghouse and edison fought what was known as the war of the currents. eventually, westinghouse triumped using alternating current for power distribution. alterning current is better for power generating because
Answers: 1
Physics, 22.06.2019 14:10, chuchi24
The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).
Answers: 3
Physics, 22.06.2019 18:00, maren17
Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)
Answers: 3
Physics, 22.06.2019 19:00, deonnaturner68p7hz7y
The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.
Answers: 1
Westinghouse and edison fought what was known as the war of the currents. eventually, westinghouse t...
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