# Placement Papers - L & T

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### L&T ECC PATTERN JULLY - 2007

Posted By : N.Malathi Rating : +22, -12

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