11.a. In dwelling units, motels, hotels, and other occupancies such as dormitories, nursing homes, and similar residential occupancies, any luminaire or receptacle for plug-connected loads rated up to 1440 VA, or less than ¼ HP, shall be supplied at not more than A. 277 V. B. 50 V. C. 120 V. D. 600 V. 11.b. A feeder neutral with a load of 400 A would be permitted the demand factor applied to ________of the load. A. 140 A B. 340 A C. 200 A D. 100 A

SECTION B-Choose any TWO (2) Questions from this Section Question 1 [25 Marks] (a) A commercial building has a power demand of 50 kW at a power factor of 85%. Determine (i) (ii) The annual penalty if the utility's minimum power factor is 95% and the cost of power is P10/kW/month (9) P The cost of capacitor, which when connected in parallel to the load will improve the power factor to 100%. (Assume the purchasing cost of capacitor is P30/kVAR) (10) (b) A 3-phase, 10 kVA load has a power factor of 0.342. The power is measured by two wattmeter method. Find the reading of each wattmeter. Q w Var Va = 10€ Va >= 10kVA pl: 0.36 2 (= Isine 5 3149 Question 2 [25 Marks] (a) A single-phase motor takes apparent power of 1909 VA at a power factor of 0.866 lagging when con- nected to a 230 V, 50 Hz supply. (i) Calculate current drawn from the supply (ii) (b) Draw a fully labelled equivalent circuit of a transformer Two similar capacitors are then connected in parallel with each other to form a…

!!! D. TCF 1.SI 19. Which of the following correction factors makes it possible to include the effects of both potential transformers and current transformers in an installation? A. PACF B. FCF C. RCF

Please answer all subpart either dislike Please all subpart is compulsory