Moving Iron instruments are applicable with
a) DC only b) AC only c) DC & AC
Answer Posted / rttrt
(c)
| Is This Answer Correct ? | 3 Yes | 1 No |
Post New Answer View All Answers
Pl. share your experience about industrial-electronics repair of machine tool.
What is meant by derating factor?
how to calculate percentage impedence at 75 deg C at normal tap
Is it possible to implement Restricted Earth Fault protection for a transformer without neutral CT?
In Air circuit breaker LSIG protection unit is used. Without fault in cables (2 runs 3Cx150Sq.mm Copper, 1Kv grade, XPLE armored cable IR value is more than 550Mohm @ 500V Megger) and load section Long time Overcurrent protection is triggers and trips the unit. We changed LSIG protection with new factory tested unit. Even then fault is persisting. Please suggest the possible causes
How many kw will suply from one db
what is the criteria for selecting fuse rating in 1phase, 2phase & 3phase welding sets?
When and where resistance earthing is used ? How to calculate the time constant for earth fault
(1)The demand for electricity , the amount of renewable generation available, the amount of fossil fuel generation available and the cost of the fossil fuel generation are shown in table below period(hrs) demand(MW) renewable (MW) fossil- fuel(MW) cost of fossil fuel(MW) 00.00 - 01.00 2000 1800 2000 30 01.00 - 02.00 2300 2500 2000 30 02.00 - 03.00 2500 2700 2100 45 03.00 - 04.00 2900 3100 2100 50 04.00 - 05.00 2700 2600 2500 45 05.00 - 06.00 2400 2000 2700 50 06.00 - 07.00 2200 1800 2000 36 07.00 - 08.00 2100 1600 2000 36 Assuming that the renewable generation incurs zero cost, determine an optimal generation schedule(specifying the amount of renewable generation and fossil fuel generation used in each period, the cost for each period and the overall cost for 8 hours.)
Why is a synchronous motor always star connected??
Briefly describe means used by electricity suppliers to influence the flow of active and reactive power in power networks (one for each type)?
What is phenomenon of electromagnetic induction and how it works?
How to control motor gearbox speed and friquency? If length of cable and dia given, how to measure the voltage drop?
EXPLAIN WHY THE SURGE CURRENT RATING OF AN MCCB OR CIRCUIT BREAKER DECREASES WITH INCREASE IN THE RATING OF MCCB OR CIRCUIT BREAKER.
Name one of major transformer company in KSA ?