NWPGCL for the Post of Assistant Engineer (Electrical)

Recruitment Test Question of North West Power Generation Company Limited (NWPGCL) Post: Assistant Engineer (Electrical) Time: 01.30 hours Exam Date: 05.06.2015

Full Marks: 100 Venue : BUET

MCQ (60) 01. 02. 03. 04. 05. 06. 07. 08. 09. 10. 11. 12. 13. 14. 15. 16. 17. 18.

RJ45 এ pair

? হ । ?

Ans: 4 pair Ans: Ans:

DRAM=Dynamic Random Access Memory ? Ans: এ চ্ছেদ কর। Ans: +ই অননব এর সমার্নক শব্দ চ্ছকানটি? Ans: ? Ans: ? Ans: ১১ অ ? Ans: ( ) ? Ans: ২১ হ হ ? Ans: “ হ ” এ ? Ans: হ ? Ans: UNO(United Nation Organization) এ ? Ans: New York WAN ? Ans: Wide Area Network Recover এ ? Ans: Ctrl+Z RAID হ হ ? i) Save এ ii) Recover এ iii) Redundancy এ iv) Ans: iii) Redundancy এ 19. Rainboo( ) হ ? Ans: 20. ও ? Ans: Ultraviolet । 21. টি চ্ছকান ধরননর শব্দ? Ans: 22. “ ” এ ? Ans: অ 23. file এ অ ? i) .doc ii) .docx iii) .xls iv) .xsl Ans: iv) .xsl 24. Processor এ ? Ans: GHz 25. অ ? Ans: java 26. এ Peripheral device power ? 27. amalgam ? Ans: 28. হ ? 29. ASEAN এ ? 30. হ ? 31. “ হও ” এ ? Ans: 32. Subordinate এ synonym 33. An animal eats 39 pounds for 6 days. How many more days needed to eat 91 pounds? Ans. 8 days 34. A man takes 20 min to overcome a race & takes 25 min to overcome 2nd time. What is his average speed mile/hr. If the race is 3 mile longs. Knowledge Park

35. A radio-active element has ½ life of 2 hours. If its 616 gm, what will be the value after 4 hours? Ans. 154 gm 0 36. A circle has 14 m radius. What is the length, if its 90 arc? 37. I look ………… you as my brother.

True/False (10*0.5) = 5 1) 2) 3) 4) 5) 6) 7) 8) 9) 10)

Generation voltage of Bangladesh is 132 & 230 KV. The voltage of HT side of transformer can be higher if no load voltage is coupled with inductor. Starting winding is provided in single phase motor to make it self starting. Voltage regulation can be negative for single phase transformer. Isolator is designed to operate under load conditions.

Departmental MCQ 1) An RC circuit has a voltage across C is 12 V & R is 5 V, What is the supply voltage? 2) 3) 4) 5) 6)

Written: (10*4)=40 03. If i=2 cos (wt+10) and v=3 sin (wt-10), what is the phase angle and which one leads?

09. Show that the generalized circuit of short circuit transmission line for the condition AD-BC=1.

11. Find the output of the following figure……

04. Find the load RL for maximum power transfer and the maximum power adsorbed by the load.

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05. A 75 KVA 4600/230 V , 50 Hz transformer gave the following test result….. O.C test : VOC = 289 V, IOC = 10.3 A, POC = 521 W S.C test : VOC = 160 V, IOC = 16.3 A, POC = 1200 W Determine the Core resistance (RC), excitation reactance (Xm) and the voltage regulation at 0.75 lagging p.f.

06. A plant rated capacity 100 MW, Average load on the system 90 MW and maximum load is 98 MW. Find the plant capacity factor and utility factor or plant use factor.

07. For the input wave of the following figure, find the output wave-form.

08. X(t) = 2 Cos (12000 πt), Calculate X(n), Is the signal is period? If its periodic then find the period. Where sampling frequency is 24000 Hz.

09. For Y connected loads, line to line voltage 203 V, total power 1200 W, p.f 0.75 leading. calculate the impedance per phase .

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