) Two feedback configurations are shown in Figures Q1.a(i) and Q1.a(ii). Derive the closed-loop gain Af in each case. Vi Vi V¡ • A₁ B₁ Figure Q1.a(i) A₁ B₁ Figure Q1.a(ii) A₂ A2 B₂ - V -V

13. If the largest ungrounded service-entrance conductor for a service is 750-kcmil copper, what is the minimum size required for a wire-type main bonding jumper for the service? a) 2/0 AWG copper b) 1/0 AWG copper c) 3/0 AWG copper d) 1 AWG copper   14. If the total circular mil area of the largest ungrounded service-entrance conductor for a service is 2000-kcmil copper, what is the minimum size required for a wire-type main bonding jumper for the service? a) 4/0 AWG copper b) 250-kcmil copper c) 350-kcmil copper d) 500-kcmil copper   15. The minimum-size grounded conductor for a service supplied by a grounded system shall not be smaller than the minimum size required for a(n)______. a) Equipment grounding conductor b) System bonding jumper c) Ungrounded conductor d) Grounding-electrode conductor

7. Describe the direct connection, series and parallel methods of measurements using Q-meters? Why and how do we use these methods, explain in brief.

How to verify the validity of the nodal analysis technique in solving electrical networks?

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The voltage drop percentage for a panel feeder with a no continuous load of 180A, using 3/0 THWN copper conductors at 480V, three-phase, and a length of 248' is

3.a. There may be installations where grounded conductors of different systems are installed within the sameraceway, cable, or box. In these cases, it's imperative that the system-grounded conductors remainA. spliced.B. disconnected.C. separated.D. buried.3.b. In dwelling units, the maximum allowable voltage between conductors that supply lighting fixtures isA. 220 V.B. 120 V.C. 115 V.D. 110 V.

In Industrial common dangers, produced by faulty equipment or burns material.