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- An astronaut uses a small motor, rated at 93% efficient, that is connected to a 12-volt [V] power supply on Mars. The motor has a resistance rating of 2.3 kiloohms [kΩ]. How long will it take to produce 3.4 calories [cal] of energy in units of minutes [min]?Q3-) A 2000KW, 500 V variable speed motor is driven by a 2500 kW generator using a Ward Leonard control system. The total resistance of the motor and generator armature circuit is 10 mQ. The motor turns at a nominal speed of 300r/min when E. is 500 V. Calculate the efficiency of the system during Es= 400 V and E. =380 V. (Handwriting is accepted.) R Load Prime E E o mover Constant Variable speed speed 2/4In a sunnier location than Eugene, the sun shines for an average of 2000 hours per year. A home owner installs solar panels that generate 3.5 kW from these panels when the sun is shining. If the local electric utility charges $0.15 per kWh, how much money do the solar panels save the home owner per year? Give the answer to the nearest dollar.
- Your family decides to limit TV watching to 17 hours every week. If the power rating on your TV is 394 W and electricity costs $0.14per kwh, then the cost for the week would be $ Do not include the dollar sign, and round your answer to the nearest cent.A 100 kW solar array located in Cheney, WA is estimated to produce 126,000 kWh. Assuming electricity produced from the solar is free ($0.00 / kWh), how much would the building save on annual electricity costs?THE RE ARE 7 VEC TORS AS FIGURE, 3 Ŕ ī, M, N P The Sum Jt kt L+ Mt Nt P + R is E QUAL TO - M f the cbove None J+ N Cero K M R N O A OC
- Still in DC Steady State, ℰ=11 volts, R1=46 Ω, R2=51 Ω, and R3=37 Ω, and L=6 Henry. Calculate I1.PA || PB = Pc = R ww R 100 wwww + F V Circuit A R R R R + F R V Circuit C wwwww wwwwww R R Luwwww R R R +1 V Circuit B R RStill in DC steady state, ℰ and R₁ are unknown, but set to allow I₁ = 4 A, R₂ = 6 Ω, and R₃ = 9 Ω. Calculate I₂.
- The average television is said to be on 6 hours per day. Estimate the yearly cost of electricity to operate 100 million TVs, assuming their power consumption averages 150 W and the cost of electricity averages 12.0 cents/kW ⋅ h .In the figure below, which of the following equations s correct? T F OF = T cos 30 OF = T sin 30 W=T=F W = T cos 30 30⁰ WStill in DC steady state, ℰ and R₁ are unknown, but set to allow I₁ = 6 A, R₂ = 5 Ω, and R₃ = 6 Ω. Calculate I₂.