Why does increasing the magnetic flux in the main field of a d.c motor cause the armature current to reduce??

1507

What is block diagram?

638

1)What is a Triode? What are its uses? 2) What is a Triac? 3) What is a Thyristor?

2052

According to IEC60034-14, When the vibration monitoring system required for motor Bearing. above which KW, it is required? and for what type of bearing the vibration probe is provided.

3674

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??

5051

i have applied for junior engineer 2 c&w for Guwahati RRB please send me last five year question paper

1581

how does directional relay work incase of ac ?

1006

What is the effect of positive feedback on the stability of the systems?

628

Battery is a voltage source? give one example of current source and why?

1077

What is the method for testing the differential protection stabilty in generator? When the time of starting What will happen if differentail protection connection wrong means?

1746

in basic 2 phase will short means tripping the power but spot welding 2 phase shorting but not tripping it will welded why.....(Q)

1490

I have a situation to design sub-Distribution board/Panel meant for feeding power sockets. In the incomer CAN i Take TP MCCB with Neutral Link and All the outgoing feeders with to sockets with TP MCCB and Neutral Link? P.S : My System is IT Earthing

1301

What is vacuum circuit breaker.define with cause and where be use it device?

714

What is Diff btw Fire Alarm & VESDA System???

1922

WHAT R THE SAFETIES IN A HIGH TENSION PANEL N LOW TENSION PANEL. ALSO WAT SAFETIES R THERE IN A 200 KVA TRANSFORMER?

1806