In transformers,<br/>Statement 1: Deterioration of oil may occur due to the result of prolonged overloading of the transformer.<br/>Statement 2: Dielectric faults occur in the winding due to turn-to-turn insulation breakdown. Both Statement 1 and Statement 2 are TRUE Statement 1 is FALSE and Statement 2 is TRUE Both Statement 1 and Statement 2 are FALSE Statement 1 is TRUE and Statement 2 is FALSE TRUE ANSWER : ? YOUR ANSWER : ?
When was the Constitution of India adopted by the Constituent Assembly? 26th November 1949 15th August 1947 January 25 1930 13th January 1950 TRUE ANSWER : ? YOUR ANSWER : ?
Determine the ohmic value of the current limiting reactor per phase external to a 40 MVA, 15 kV, 50 Hz, three phase synchronous generator which can limit the current on short circuit of 6 times the full load current. The reactance of the synchronous generator is 0.06 pu. 0.4 Ω 0.8 Ω 0.6 Ω 0.2 Ω TRUE ANSWER : ? YOUR ANSWER : ?
Find the word which is correctly spelt from the given options. Dimnished Profitable Clasification Idantical TRUE ANSWER : ? YOUR ANSWER : ?
In transformer testing, Sweep Frequency Response Analysis (SFRA) testing is a tool to help locate ____ Short circuits Core movement Winding damage All of these TRUE ANSWER : ? YOUR ANSWER : ?
A 50 Hz synchronous generator is connected to an infinite bus through a line. The p.u. reactances of generator and the line are j0.4 p.u. and j0.2 p.u. respectively. The generator no load voltage is 1.1 p.u. and that of infinite bus is 1.0 p.u. The inertia constant of the generator is 4 MW-sec/MVA. Determine the frequency of natural oscillations if the generator is loaded to 60% of its maximum power transfer capacity and small perturbation in power is given. 1.2 Hz 1.8 Hz 1.6 Hz 0.8 Hz TRUE ANSWER : ? YOUR ANSWER : ?
In public sector, what is the full form of "LIC"? Life Insurance Corporation Life Insurers Lively Insurance Corporation Life Insurance Company TRUE ANSWER : ? YOUR ANSWER : ?
A single phase full converter bridge, connected to 230 V, 50 Hz source is feeding a load R =10 Ω in series with a large inductance that makes the load current ripple free. For a firing angle of 450, calculate the rectification efficiency. 63.66% 28.33% 76.66% 50.55% TRUE ANSWER : ? YOUR ANSWER : ?
A rectangular conductor is 1.6 inches wide and 0.25 inch thick. What is its area in square mils? 40000 square mils 400000 square mils 4000 square mils 400 square mils TRUE ANSWER : ? YOUR ANSWER : ?