Determine the value of Voltage Vout 3 2 o Vout 6 A 3 2 O A. – 15 Volts O B. – 20 Volts O C.- 21 Volts O D.- 24 Volts O E. – 12 Volts

2. A bank of nickel-cadmium cells is used as the emergency lighting supply for a hospital. There are 100 cells connected in series and each has an A-hr rating of 120 A-hr. The bank has to be replaced, and the manufacturer is no longer supplying nickel-cadmium cells. It is decided to replace the cells with lead-acid cells. How many lead-acid cells will be required if each has an A-hr rating of 60 A-hr, and how should they be connected?

Please help with the solution.

Question (2) A controlled half-wave rectifier has a 240 V rms 60Hz ac source, The load a is R=30 Ohm resistor (a) Determine the delay angle such that the average load current is 2.5A (b) Determine the power absorbed by the load (c) Determine the power factor.

2 Rectifier circuit  determine the following show complete solution

The input to a full-wave rectifier is 10 V AC (RMS). The load resistor is 10 ohms and rectifier losses are 4W. The power efficiency of the rectifier is: O A. 58 % O B. None of the other choices are correct O C. 100 % O D. 80 % O E. 67 %