The working voltage of a battery is defined as the voltage at the battery terminals A. while float charging. B. while the battery is being tested. C. while the battery is being discharged. D. while the battery is being charged.

Eight cells, each with an internal resistance of 0.2  and an e.m.f. of 2.2V are connected (a) in series, (b) in parallel. Determine the e.m.f. and the internal resistance of the batteries so formed.

What are the basic parts of a battery? How do batteries generate electrical current?

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Q4 / three phase half wave controlled rectifier is used to feed a resistor load of ( 10 ohm) the source is (208 volt) star connected: calculate: 1- The average value of the voltage and current on the terminal load if angle (45). 2- The average of the voltage on the terminal load if angle (80). 3- The angle required to get 7 amp. 4- Draw the circuit.

For a battery with a rated voltage = 12 V and a rated capacity = 350 A-h, determinea. The rated chemical energy stored in thebattery.b. The total charge that can be supplied at the ratedvoltage.

A piezo-electrical crystal generates voltage when subjected to --- force. O a. Electrical O b. Mechanical O c. Gravity O d. All the three answers

İNGİLİZCE TÜRKÇE RUSÇA In a doped semiconductor, Please choose one: a. no free electrons b. free electrons are generated thermally C. there are only holes D. answers B. and D. to. there are as many electrons as holes