Lesson 20 of 26 • 23 upvotes • 12:43mins
206. When a d.c. source is switched in a purely inductive circuit the current response is (a) an exponentially rising curve (b) an exponentially decaying curve (c) a straight line passing through the origin (d) a straight line off-set from the origin. 207. The voltage and current in a circuit are given by v = 10 sin (ωt – π/6) i = 10 sin (ωt + π/6) The power consumed is given as (a) 100 watts (b) 50 watts (c) 86.6 watts (d) 25 watts 208. In a large interconnected power system, consider three buses having short-circuit capacities 1500 MVA (1), 1200 MVA (2) and 1000 MVA (3) respectively. The voltages of all the buses are 1.0 p.u. If a 3-phase fault takes place on bus 2, the change in bus voltage is described as (a) ΔV1 > ΔV2 > ΔV3 (b) ΔV1 < ΔV3 < ΔV2 (c) ΔV1 > ΔV3 > ΔV2 (d) None of the above. 209. For a long uncompensated line the limit to the line loading is governed by (a) Thermal limit (b) Voltage drop (c) Stability limit (d) Corona loss.
26 lessons • 5h 27m
Overview
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CL Wadhwa Bits Solutions (125-129)
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CL wadhwa bits solutions (130-134)
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