General: Generator Safety


This weeks’ General question is from sub-element zero (Electrical Safety) section B (Safety in the Shack) [G0B13] What must you do when powering your house from an emergency generator? A. Disconnect the incoming utility power feed B. Insure that the generator is not grounded C. Insure that all lightning grounds are disconnected D. All of …

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General: NiCd Battery Resistance

NiCd Battery Disassembled

This week’s General Class exam question is from sub-element 6 (Resistors; capacitors; inductors) section B (batteries)… [G6B13] What is an advantage of the low internal resistance of nickel-cadmium batteries? A. Long life B. High discharge current C. High voltage D. Rapid recharge Nickel Cadmium, or NiCd, rechargeable batteries aren’t as popular as they once were, …

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General: Resistance and Temperature

Electrical Components

The General class exam question of the week is from sub-element 6 (circuit components) section A (resistors) [G6A06] What will happen to the resistance if the temperature of a resistor is increased? A. It will change depending on the resistor’s reactance coefficient B. It will stay the same C. It will change depending on the …

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General: Ionosphere’s Maximum Height

Ionospheric absorption

The General question of the week is from sub-element 3 (propagation) section C (ionospheric layers) [G3C02] Where on the Earth do ionospheric layers reach their maximum height? A. Where the Sun is overhead B. Where the Sun is on the opposite side of the Earth C. Where the Sun is rising D. Where the Sun …

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General: Units of Impedance

Complex Impedance

This week’s General Class question comes from sub-element 5 (Electrical Principles) group A (impedance) [G5A10] What unit is used to measure impedance? A. Volt B. Ohm C. Ampere D. Watt Impedance is the measure of opposition to current flow in a circuit when an AC voltage is applied.  With that in mind, we can automatically …

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