Explain why capacitors can be dangerous and what you should do to protect yourself.
What will be an ideal response?
A capacitor holds a charge for a long period of time following use in a circuit. Discharge a capacitor before handling. The proper method for discharging is to create a short circuit by placing a conductor between the two terminals of the capacitor. (Be sure the main switch is open.)
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Answer the following statement(s) true (T) or false (F)
1. A primary winding is a winding that is connected to a load. 2. Autotransformers can be used as step-up or step-down transformers. 3. Autotransformers cannot use multiple taps to provide different voltages. 4. The values of voltage and current for autotransformers can be determined by using standard transformer formulas. 5. In a Variac, the windings are wrapped around a tape-wound toroid core inside a plastic case.
A variable capacitance pressure sensor determines pressure by a change in capacitance as the pressure being measured causes a change in the distance between the two plates of a capacitor.
Answer the following statement true (T) or false (F)
A lack of fusion between the filler metal and previously deposited weld metal is called ____________________.
Fill in the blank(s) with the appropriate word(s).
The Hall-effect switch is usually packaged as a ________-terminal device
A) 1 B) 4 C) 3 D) 2