3-I-060: Batteries-1
3-60I1:
When a lead-acid storage battery is being charged, a harmful effect to humans is:
Emission of hydrogen gas.
Internal plate sulfation may occur under constant charging.
Emission of oxygen.
Emission of chlorine gas.
3-60I2:
A battery with a terminal voltage of 12.5 volts is to be trickle-charged at a 0.5 A rate. What resistance should be connected in series with the battery to charge it from a 110-V DC line?
195 ohms.
95 ohms.
300 ohms.
None of these.
3-60I3:
What capacity in amperes does a storage battery need to be in order to operate a 50 watt transmitter for 6 hours? Assume a continuous transmitter load of 70% of the key-locked demand of 40 A, and an emergency light load of 1.5 A.
177 ampere-hours.
100 ampere-hours.
249 ampere-hours.
None of these.
3-60I4:
What is the total voltage when 12 Nickel-Cadmium batteries are connected in series?
15 volts.
12 volts.
12.6 volts.
72 volts.
3-60I5:
The average fully-charged voltage of a lead-acid storage cell is:
2.06 volts.
1 volt.
1.2 volts.
1.56 volts.
3-60I6:
A nickel-cadmium cell has an operating voltage of about:
1.25 volts.
1.4 volts.
1.5 volts.
2.1 volts.
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