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how many minutes or seconds taken by the transmission of electrical power from generating end to distributing end?
3 6308Why the steam turbines are run at high speed where as the hydro turbines are run at low speed?
1 5142What is Black-out and Brown-out situation in the context of voltage stability in power system?
1 5901Pls tell me what is the exact current conducting capacity of copper and aluminium cables?how much capacity of cables need to 90kw induction motor&how?
1 4576During the transients in alternator,the mechanical power input remains almost constant while the electrical power output changes significantly.Why?
1 4317Amoung all types of short circuit faults in a transmission line which one has less number of occurance and why?
1 4346What are various power system instabilities and what are their effects on power system operation?
1 3687Post New Electrical Engineering Questions
What is the operating principle of turbo-generator.
What are the functions of different probes used in cro?
1. A 380 / 220 V r.m.s. 3-phase 4-wire circuit carries loads of 8 + j8.1 ohm; 4 + j4.1 ohm; and 2 +j2.1 ohmin the three phases respectively. The length of the circuit is 100 m, and the resistivity of the phase conductors is 0.0005 Ω/m. The neutral conductor is of the same size as the phase conductors. a) Select a reference angle 0for the first phase. Then write down the three phase voltages in both polar format and complex number format. b) Make appropriate assumptions, and take temperature effects on resistance is insignificant. Calculate the currents in the three phases. (Note: Determine conductor resistance, and apply Kirchhoff’s Voltage Law) Based on the result, suggest a main switch rating for the circuit. c) Show your preferred direction of neutral current in a diagram, and then determine its value. (Note: Apply superposition principle, and Kirchhoff’s Current Law) Use its magnitude to show that in this circuit, the unbalanced load may increase the voltage drop in some of the phases. (Note: Also observe the common volt drip in neutral) State your assumptions, if there are any. d) Suddenly the neutral wire of the circuit is broken. Estimate the new currents in the first phase, i.e. Phase L1. State your assumptions, if there are any.
What do you understand by avr?
how to select electrical equipment such as fuse,dg,transformer,motor,msb,wire,cable as per the connecting load..please mention any books to design,take licence
please send me last 5 year interview questions
can any one provide me a connection wiring diagram for a DG set control panel along with BOM?
What is mean by Sensitive Earth fault & what are the effects
what is the Pickup/drop off ratio in BCPU relays
Differentiate between kirchhoff’s first law and kirchhoff’s second law?
What is the different types of cable & current capacity of cable
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
Usually in the L & T make MCC feeders' power circuit,we have BMR after the MAIN CONTACTOR.,can we interchange their position, keeping the control logic same???
Can you please explain creepage distance in detail, for a 6.6kV cable head what must the distance be and how do you determine it?
Please tell me the formulaes while designing a substation for power Calculations in designing a 33 KV Substation?????
