Topic 5 Quick Check OPS_330T

The system having ±0.5% of F.S.D if the full scale deflection is 50 units, then accuracy is _____ a. ±0.25 b. ±1 c. ±0 d. ±0.5

Analyse several voltage and current situations in different loading scenarios in a simplified radial (transformer to consumption) medium-voltage power system example. There are only 2 nodes in the 35 kV line – node 0 from the 110/35 kV and node 1 with one consumer. The physical characteristics of the line and the loading scenarios are individualized for each student – please see the attached file Excel “WM9P3 Task1 data” for your particular data set.  Briefly reflect on the complexity of the calculations for known input or output voltage, as well as for fixed or voltage-dependent consumption in this simple power system model.  Analyse and discuss the sensitivity of the voltage drop [in % of amplitude and the degrees of phase] with respect to the current level [in %] and to the power factor.

AA Health and Safety Mr Ali Lilo, AL4510222L Time remaining: 53 Quick Select QuestiBintaseconds three of the following items of information are required when completing a RIDDOR form? 1 Date & time of incident 2 Type of accident 3 Organisation details. 4 Employer public liability insurance a) 3,2,4 b) 1,4,3 c) 4,2,1 d) 2,3,1 Prev Next actclass.co.uk Questi 22 Questi 23 Questi 24 Questi 25 Questi 26 Questi 27 Questi Submit Answers

Question 3 and 4

ELECTRIC MACHINERY  do the (iii, iv v)

(c) Draw a circuit diagram to represent a TN-C-S earthing system and briefly explain its advantages and disadvantages.   (d) Briefly explain how to estimate the height of air termination of a lightning protection system network using the rolling sphere method and protection angle method. (e) Briefly explain what is meant by Ground Potential Rise (GPR) and explain why an animal like cow would not be adequately protected against GPR.   Note : answer all or else dnt attempt the question

KINDLY ANSWER THESE THREE QUESTIONS. THANK YOU AND PLEASE PROVIDE EXPLANATION

The maximum electrical trade size of intermediate conduit is a.) 150 mm b.) 125 mm      c.)  200 mm      d.) 100 mm

Voltages are represented by: e, = 20sinwt e2 = 30sin (wt ez = 40cos (wt +") e4 = -15sin wt es = -25cos (wt – ") Find the resultant instantaneous voltage using: (a) (b) (c) trigonometric identities component method complex method

27). 2 In the northeastern United States, in which direction does the needle of a magnetic compass point? OEast of geographic north O South of geographic north O North of geographic north West of geographic north 28) Inter-row spacing for a tilted rack array is determined by which factors? O Slope and voltage of modules O Sun angle and tilt of modules O Sun angle and voltage of modules O Rack manufacturer specifications 24) Which type of PV array mounting system is MOST common for a residential application with a sloped, south-facing roof? O Rack mount O Pole mount O Ballasted mount O Standoff mount 30) A specification requires the PV array for a stand-alone PV system to be sized to produce 1.25 times the average daily system load of 80 Ah when the irradiation recelved on the array is 4 peak sun hours. If the selected PV module has STC-rated maximum power current (Imp) of 5 A, how many parallel- connected strings of modules are required? 5 31 Which silicon solar cell manufacturing…

15.a. You're installing a feeder in a hospital that will terminate in five branch circuits in patient care areas. Tomake the feeder legal for this purpose in this area, you mustA. use enhanced bonding practices on the feeder's raceway.B. bond the neutral to a grounding electrode at both ends of the feeder.C. run a bonded and an isolated EGC.D. run two wire conductor EGCs.15.b. An electrical system that's not grounded and is between 120 and 1000 volts must include the use ofA. equipotential barriers.B. ground detectors.C. ground isolators.D. arc suppression.

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What is the correct repair for faulted or damaged SRS component pigtails? O Component replacement O Terminal repair kit O Crimp, solder, heat shrink O Harness replaceme