Sir pl provide 5 year sample paper for post junior engineer(electrical).I have currently applied for junior engineer (electrical) on RRB Ajmer
3303We have AC-transformer 110/13.8kv,40MVA.If DC-Voltage=110kv is applied in its primary what will happen?
6 7604what is the opencircuit tes &short circuit test in transformers ,why you need this test, in poen your connecting which votmeter why?
1 3992in dc suppy frequency is zero why? if dc frequency is zero how to exist dc transients and ac transients
1675if we want to convert the two 12 V DC batteries in parallel for UPS ? what would be the result ? which is better for a UPS , connect two batteries in series or connect them in parallel ?
2 3514WHAT ARE THE DATAS REQUIRED FOR PROTECTION AND METERING AND CONTROL AND LOGIC PREPARATION,HOW TO STUDY THE PROTECTION AND METERING?
L&T,
1830Post New Electrical Engineering Questions
CAN WE CALCULATE THE NEGATIVE SEQUENCE AND ZERO SEQUENCE REACTANCE OF A GENERATOR USING ONLY ITS RATED VOLTAGE, KW, PF AND SYNCHRONOUS REACTANCE??? IF YES, THEN HOW??
How to set the relay,,??
What are the disadvantages of hydropower?
what is the effect of vector group while phase sequence of a generator changes,whether the vector group changes or not
Why wind turbines wheels rotate constantly
What is minimum permicible value of leackage current for LT Panle when applying voltage up to 3 KV for 5 Minuits?
What is the difference between a 3 winding and 2 winding Potential Transformer
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what are the components in electrical control panel (for example: 415V, 3-ph, panel to operate utility and 3-ph DG set).
Differentiate between Zero and Negative sequence current
how can i use REF and diffrencial relay both in 1 CT core for transformer protection?
please tell me, how i clear the objective test? when i studied form the one book after i solved the objective ,that time i solved that qes. but if i tried solve objective form the other book then i could not solved these que.
In case of salient pole alternator when number of poles are 4 or more than 4 it helps the flux wave to be sinusoid as air gap length is increased from center to tip , but if the number of poles are 2 how does the flux wave is sinusoidal?
we have two generators different capacity on 15 MW and other 6MW at 11 KV , 15 MW gen. bus short level current 40KA,and 6MW short level current 25KA,, length of cable 100MTR between 6 MW from 15MW gen. for bus coupling . kindly tell any one can we use both NGR OR one NGR from any GEN. BOTH NGR has diff. rating. Tariq pakistan
how to measure earth resistance of a substation