16. The grounded conductor is known as? _____________ 17. If a circuit has no resistance bet live and neutral it is a? ____________ 18. What does electricity produce?
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The grounded conductor is known as ground or earthed conductor because it does carry any supply, it is used to protect the household wiring during the fault conditions when there is excess supply to the wiring.
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- 1. The practical unit of electric charge. ____________ 2. A path for the current to flow. ______________ 3. DC Voltage has ________ polarity 4. Resistance to current flow in AC circuits, measured in ohms. ____________ 5-7. Types of grounds in electrical/electronics circuits. (5) ______________ (6) ______________ (7) ______________ 8. Also known as Ohm’s Law. ________________Electrical plants Define the terms "Main column ." " Line ." " Protection earth " and " Operating earth1. Alternating current systems of less than _______ volts are required to be grounded if they're installed outside as overhead conductors. A. 50 B. 100 C. 75 D. 120
- In the generation of electricity, generating too little electricity will cause __________ and generating too much electricity will cause__________________ a. Blackout and brownout b. Brownout and blackout c. Lights on and lights out d. Lights out and lights on24. The National Electrical Code® _____ contains tables dealing with conductors for general wiring. Select one: A. 100 B. 110 C. 310 D. 300a.2. Which of the following statements about grounding electrode conductors is true?A. They restrict the ground connection.B. They eliminate potential differences between conductive objects and the Earth electrode.C. They facilitate operation of overcurrent protective devices.D. They perform bonding between the Earth and grounded conductors.a.3. Main bonding jumpers are required to be made of _______ or other corrosion-resistant material.A. brassB. aluminumC. copperD. copper-clad aluminum
- The resistance of a wire is 126.48 ohms at 1000C and 100 ohms at 300C. The temperature coefficient of this wire at 00C is ____________per C0.4. Why are the outer metal parts of electrical appliances grounded?14: In a natural circulation solar water heater, collector has a glass cover on the top and an ________________ material at the bottom. a. Insulating b. Sheets c. Steel d. Tubes 15: text ____________ wind mill consists of narrow rims and wire spokes. a. Single bladed b. Vertical Axis c. Double bladed d. Multibladed
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