Placement Papers - L & T

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L&T (ECC) NIT Trichy Paper Pattern on 29th July 2008

Posted By : Rupesh Rating : +36, -21

Pattern: L&T (ECC) NIT Trichy Paper Pattern on 29th July 2008

The test was completely based on respective subjects only; they are allowing mechanical, civil, environmental engg students along electrical.
The subjects they covered are power systems, power electronics, electrical machines,
Electrical measurements, simple logical circuits,

1. Convert 16 into binary form ..
2. In which gate o/p is 1 when all i/p are 1
3.  What is moving coil ammeter reading, if supply is (10+15 sin 314 wt),
4. If voltmeter reads 100V,if we want to measure 150 what we have to do
5. Y-delta starter used in induction motor for..
6. In a balanced Y connection if VAN=400at 60,what is VBN ..
7. for unity TMS 10 sec, what about 0.5 TMS ans: 10(chck it).
8. 400V,15 kW,4%slip,50 Hz, 4 pole what is the torque,
9. what r the factors influencing change in torque &speed
10.  buccholtz relay is used for
11. lightening arrester is used for
12.  what is the power dissipated in i=10+5 sin 314wt for 2ohm resistor
14. what should be the impedance value for 3-4j,for max power transfer
15. if current required for triggering thyristor at -30 degrees(temp) is 80 mA, what is the current required at 60 degrees.
16. Question regarding thevenins resistance
17.  Fourier series expansion like periodic signal ..
18. Question regarding reactive power compensation
19. Question regarding positive sequence currents some L-L-G fault occur on 3 " ph network Ia currentlike
20.400v,50ohm resistor , inductive reactance 100ohm , circuit to be resonance ,find the voltage across capacitor
21.  what is the ideal power loss for 1.1mH & 11.86 nF, length is negligible voltage
22. sync motor is used for
23. In Q factor which resonance is usedans: series.
24. regarding p.u. values
25. regarding voltage bus parameters (3 ph networks)
26. charging of capacitor
27. reactive power compensation
28. Poles location
29.I controller is used for ..steady state error reduction

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