9. With the same given problem in no. 8, calculate the power used to do the same work in 10 seconds. a. 65.65 watts b. 45 watts 9 c. 80.1 watts d. 50 watts e. 70.71 watts

The voltage applied to a circuit having a resistance of 12 ohms is 150 sin 377t volts. Determine: (a) equation of current wave, (b) equation of power wave, (c) frequency of power wave, (d) average power, (e) power when t = 0.002 sec., and (i) the energy delivered to the circuit when   t = 0.002 second.

1. Calculate the average power supplied by source and power factor of the entire circuit shown.

the two wattmeter method is used to measure power of a 0.8 power factor load.if the sum of the readings on the two  wattmeters is 50kW, find the reading of each wattmeter

In an apartment with three flats fed from a 400V 60 Hz three-phase network, a 250W device in apartment-1 and a 'kW device in apartment-2 were operating in a time interval as seen in the figure, while no power was consumed in apartment 3. A disconnection has occurred. In this case, approximately how many Volu is the voltage at the ends of the 250W device? a)214V b)230v C) 372V d)0(zero) e) 356V

Shown in the figure, ahydroelectric plant has two devices, a turbine and a generator.  If the efficiency of the whole plat is are =80 % , the efficienty of the generator is =93 %, calculate the efficiency of the turbine _____%

A power plant has a capacity factor of 40.9% and a plant use factor of 45.2%. How many hours per year was the plant not operating?

Last summer, a Meralco electrician conducts a record of the electrical voltage supply readings within 5 hours at Cavite City. (See the table below) 1. Represent a graph showing the voltage readings as y-values and the time as x-values. 2. Is the graph continuous or not?

Find the total average power absorbed and the total average power supplied in the network from the figure shown.

1. Find the average power absorbed by a circuit   component   that  has  a   voltage    of ​ v = 20.3 cos(754t - 10°)V across it  when a  current   i = 15. 6 cos(754t - 30°)  mA   flows​ through it.    CHOICES: A. 139 mW          B. 149 mW             C. 159 mW          D. 169 mW         E. NOTA​​