With current technologies and solar collectors on the ground, the best we can hope for is that solar cells will generate an average (day and night) power of about 230 watts/m2watts/m2 . What total area would we need to cover with solar cells to supply all the power needed for the United States
Answers: 2
Physics, 22.06.2019 01:30
For problems 1-3, consider a simple dc brush motor with a permanent magnet stator. with an an consider a simple dc brush motor with a permanent magnet ae supply voltage of 100 v, the no-load speed of the motor is 1000 rpm. this motor can provide a torque of 1.9 n-m at 800 rpm drawing a current of 2 a current are both zero at no load.) 1. with an armature supply voltage of 100 v, the motor is operated at 900 rpm. what is the motor torque? what is the mechanical power delivered by the motor? what is the current draw? what is the electrical power input? what is the energy efficiency of the motor? with an armature supply voltage of 100 v, the motor is operated at 1100 rpm (where it acts as a generator). what torque input is required? what mechanical power is required what current is generated? what is the electrical power generated? what is the energy efficiency of the motor acting as a generator? 2. with an armature supply voltage raised to 120 v, the motor is operated at 1000 rpm. what is the no-load speed? what is the motor torque? what is the mechanical power delivered by the motor? what is the current draw? what is the electrical power input what is the energy efficiency of the motor? 3.
Answers: 3
Physics, 22.06.2019 02:00
Aplane travels 1000 miles in 5 hours .what is the planes average speed?
Answers: 2
Physics, 22.06.2019 12:30
What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery
Answers: 1
Physics, 22.06.2019 15:30
Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.
Answers: 2
With current technologies and solar collectors on the ground, the best we can hope for is that solar...
Physics, 30.03.2020 09:47
History, 30.03.2020 09:48
English, 30.03.2020 09:48
SAT, 30.03.2020 09:48
Mathematics, 30.03.2020 09:48
Mathematics, 30.03.2020 09:48
Mathematics, 30.03.2020 09:48