i. What is the internal resistance of the battery?
ii. What is the resistance of the wire from the battery to the starter?
iii. How much power is wasted in this wire when the starter is operating?
iv. What is the resistance of the earth side of the starter circuit (i.e. from the starter motor casing to the battery via the engine casing and earth strap)?
v. What is the power consumed by the starter motor?
vi. How much power is wasted in the battery internal resistance when driving the starter motor?
vii. From your results, what is the maximum power output of the alternator?
viii. Assuming that the alternator is 90% efficient, how many horsepower would this require from the engine? (take 1BHP as 740W)
ix. How many amps are charging the battery during the load test with the engine at high rpm?
x. What is the power consumption of the load bank (assuming it operates at battery voltage) with the engine at about 2000rpm?
xi. What is the total resistance of the earth side of the alternator circuit (i.e. from the alternator to the battery via the engine casing and earth strap)?
xii. What is the resistance of the wire from the alternator to the battery?
xiii. Why does the engine slow down when the lights are turned on?
xiv. Why does the terminal voltage of the battery drop as the current drawn from it increases?