COMPRESSOR PULLEY 2 in MOTOR PULLEY

The interior lighting of refrigerators is provided by incandescent lamps whose switches areactuated by the opening of the refrigerator door. Consider a refrigerator whose 40 Wlightbulb remains on continuously as a result of a malfunction of the switch. If therefrigerator has a coefficient of performance of 1.3 and the cost of electricity is Rs. 7 perkWh, determine the increase in the energy consumption of the refrigerator and its cost peryear if the switch is not fixed. Assume the refrigerator is opened 20 times a day for anaverage of 30 s.

Still in DC Steady State, ℰ=11 volts, R1=46 Ω, R2=51 Ω, and R3=37 Ω, and L=6 Henry.  Calculate I1.

Still 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.

A generator connected to a stationary bicycle is used as a power source.

A5welectrical motor is 80 percent effective. How long does it take to consume 100J? * 5 s 8 s 20 s 40 s

A transformer steps the line voltage down from 110 to 9.0 V so that a current of 0.50 A can be delivered to a doorbell. (a) What is the ratio of the number of turns in the primary and secondary windings? (b) What is the current in the primary winding? (c) What is the resistance seen by the 110-V source?

If the current in an inductor is doubled, by what factor is the stored energy multiplied?

Still 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.

A certain house uses an average power of 485 Watts all day, everyday, for a 31 day month.  If the energy costs are $0.21 per KW-hour, what is the house’s energy bill for this month? (Your answer is in dollars, so put $ for the units.  Also, you'll round your final answer to the nearest cent.)