1 Name……………………………… Reg. No.………………………… Pankajakasthuri College of Engineering and Technology Department of Electrical and Electronics Engineering Eighth Semester Second Series T est !pril "#$% 08.803 ELECTRICAL SYSTEM DESIGN (E) Time& " 'ours (a). (arks& *# +nstruction& !ns,er all -uestions from Part ! P!RT ! P!RT / Sreekanth.S, Ast Prof. EEE Department, PKCET 1. Menti on the st andard v alues o f volt age and t he permitted t oleran ce speci fied as p er NEC 2. Writ e the impor tant safet y aspe cts o f ele ctrica l syst em de sign 3. What are t he fa ctors to b e con sidere d for selection of cab les? . E!pla in the metho ds of s elect ion of start ers fo r 3 pha se "nduction motors #. $ra% the schematic diagr am for the instal latio n of 32&' ( dies el generat or %ith all the protec tive and measu ring devices 0*123 "#4 0!ns,er any " -uestions4 )a* +riefly e!plain the re,uirements of good lighting scheme b* Write short notes on t he basis of electrical installat ion on 1* lifts and 2* Escalato rs -. (n assembly building has a seating capacity of - people. $esign the electrical installation including the preparation of installation plan/ selection of all the electrical fittings/ si0e cables/ and s%itchgear and dra% the detailed schematic diagram . ( f actory of 1m #m si0ed floor is e,uipped %ith a total installed po%er load of 12#&W consisting of the follo%ing 1* line shafting of t%o 2#&W /1#' 3 phase #0 slip ring induction motor 2* "ndividual machine drives of four 1#&W 1#' 3 phase #0 s,uirrel cage induction motor and t%o #&W 1#' 3 phase #0 s,uirrel cage induction motors 3* 4ight load of # &W (ssume po%er factor and efficiency of motors are . and 5. $esign the electrical system for this industry including selection of cables s%itch gears and starters. (lso dra% detailed schematic diagram 0" 1 $* 3 5#4

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Name………………………………

Reg. No.…………………………

Pankajakasthuri College of Engineering and TechnologyDepartment of Electrical and Electronics Engineering

Eighth Semester Second Series Test !pril "#$%

08.803 ELECTRICAL SYSTEM DESIGN (E)

Time& " 'ours (a). (arks& *#

+nstruction& !ns,er all -uestions from Part !

P!RT !

P!RT /

Sreekanth.S, Ast Prof. EEE Department, PKCET

1. Mention the standard values of voltage and the permitted tolerance specified as per NEC

2. Write the important safety aspects of electrical system design

3. What are the factors to be considered for selection of cables?

. E!plain the methods of selection of starters for 3 phase "nduction motors

#. $ra% the schematic diagram for the installation of 32&'( diesel generator %ith all the protective and measuring

devices

0*123 "#4

0!ns,er any " -uestions4

)a* +riefly e!plain the re,uirements of good lighting scheme

b* Write short notes on the basis of electrical installation on 1* lifts and 2* Escalators

-. (n assembly building has a seating capacity of - people. $esign the electrical installation including the preparation ofinstallation plan/ selection of all the electrical fittings/ si0e cables/ and s%itchgear and dra% the detailed schematic diagram

. ( factory of 1m #m si0ed floor is e,uipped %ith a total installed po%er load of 12#&W consisting of the follo%ing

1* line shafting of t%o 2#&W /1#' 3 phase #0 slip ring induction motor 2* "ndividual machine drives of four 1#&W 1#' 3 phase #0 s,uirrel cage induction motor and t%o #&W 1#' 3 phase

#0 s,uirrel cage induction motors 3* 4ight load of # &W (ssume po%er factor and efficiency of motors are . and 5. $esign the electrical system for this industry includingselection of cables s%itch gears and starters. (lso dra% detailed schematic diagram

0" 1 $* 3 5#