1. Using only a potentiometer, the ac trigger time of an SCR can be varied from about to degrees. 2. Using a potentiometer and a capacitor, the ac trigger time of an SCR can be varied from about degrees. 3. When the SCR conducts, the voltage across R is about cqual to the to 4. When the SCR conducts, the voltage across its A-K terminals is about 5. The voltage across R, when the SCR conducts is the result of V. times

12. A short circuit describes the condition where there's contact between theA. hot wire and the neutral wire.B. grounded conductor and the grounding wire.C. hot wire and the grounding wire.D. neutral wire and the grounded conductor. I'm not sure if it's the letter A or C, could you help me with the correct answer.

A cylindrical 00 AWG copper wire is coated with NEMA class B insulation. The normaloperating temperature of the wire is . What is the maximum current the wire can carry for 1second without exceeding the NEMA temperature rating?

If an electrical system operates at a potential higher than 600 volts, the nonmetallic conduit must be encased in at least_of concrete. A. 1 inch B. 2 inches C. 4 inches D. 6 inches

Please answer in typing format solution please only Please answer all subparts is compulsory to answer in your Please I will like it please

II- Research how engineers dispose of the waste produced by the generation of nuclear energy. Be specific and provide details. Please cite sources for all research completed while answering this question. Explain in detail regulations and environmental concerns that may apply (include a minimum of three – more is better). Be specific and provide details. Please cite all your sources. Which field(s) of engineering is involved with these disposal Projects? Are these fields of engineering of interest to you? Why or why not. Explain in detail    Answer all 3

What is the total number of systems?

Estimate the length of conduit to perform the next bends. EMT will be bend using a hand bender. Provide your answer in inches (just the number) using up to 2 decimals. The picture shows two panels connected by a back-to-back 23.5" stubs EMT 3/4" 6.25 ft P

Assuming all terminals are rated 75°C and you have a  #10 AWG THHN/THWN conductors in a conduit and the conduit is run on the roof off a office building where the ambient temperature never rises above 30°C the largest size circuit breaker or fuse permitted to protect these wires is:?

The wording that I am running into with questions such as "The number of conductors required to be installed between three-way and four-way switches is " is confusing.  The text is not expalining this in a way that I am understanding anything other than grounding conductor, which is optional unless I am using a metal box.  So what type of "conductor" is beng discussed?