L&T ECC PATTERN JULLY - 2007
PAPER : L&T ECC PATTERN - July 2007
On 26-07-07, L&T(ECC) came to our college for campus recruiting, besides our college Annamalai university students were also participated in recruitment, The selection process is different for graduates and post graduates,
I am doing M.Tech (electrical), for one hour they conducted test for 60 marks, 30 one mark, 15 two marks, no negative marks. 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--
I remembered only few questions
Convert 26 into binary form In which gate o/p is 1 when all i/p are 1 What is the 2's complement of -17 What is moving coil ammeter reading, if supply is (10+15 sin 314 wt), If voltmeter reads 100V, if we want to measure 150 what we have to do Y-delta starter is used for In a balanced Y connection if VAN=400at 60, what is VBN for unity TMS 10 sec, what about 0.5 TMS 400V,15 kW,4%slip,50 Hz, 4 pole what is the torque, what r the factors influencing change in torque &speed buccholtz relay is used for lightening arrester is used for what is the power dissipated in i=10+5 sin 314wt for 2ohm resistor what should be the impedance value for 3-4j,for max power transfer if current required for triggering thyristor at -30 degrees(temp) is 80 mA, what is the current required at 60 degrees. Question regarding thevenins resistance Question regarding periodic Fourier series Question regarding reactive power compensation Question regarding positive sequence currents 400v, 50ohm resistor, inductive reactance 100ohm, circuit to be resonance, find the voltage across capacitor what is the ideal power loss for 1.1mH & 11.86 nF, length is negligible voltage sync motor is used for regarding p.u. values regarding voltage bus parameters charging of capacitor reactive power compensation Y-bus, Z-bus 2 x 2 matrix Poles location I controller is used for
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