Batteries -2

Question 1

When an emergency transmitter uses 325 watts and a receiver uses 50 watts, how many hours can a 12.6 volt, 55 ampere-hour battery supply full power to both units?

Answer 1

1.8 hours

Question 2

What current will flow in a 6 volt storage battery with an internal resistance of 0.01 ohms, when a 3-watt, 6-volt lamp
is connected?

Answer 2

0.4995 amps

Question 3

A ship RADAR unit uses 315 watts and a radio uses 50 watts. If the equipment is connected to a 50 ampere-hour battery rated at 12.6 volts, how long will the battery last?

Answer 3

1 hour 43 minutes

Question 4

If a marine radiotelephone receiver uses 75 watts of power and a transmitter uses 325 watts, how long can they both operate before discharging a 50 ampere-hour 12 volt battery?

Answer 4

1 1/2 hours

Question 5

A 6 volt battery with 1.2 ohms internal resistance is connected across two light bulbs in parallel whose resistance is ohms each. What is the current flow?

Answer 5

0.83 amps

Question 6

A 12.6 volt, 8 ampere-hour battery is supplying power to a receiver that uses 50 watts and a RADAR system that uses 300 watts. How long will the battery last?

Answer 6

17 minutes or 0.3 hours