please I wont know how to calculate the vector group for power transformer ZNyn11 best regard.

1857

placing earthing pit in pathway is correct or wrong??. placing earthing wireGI1/18 inside walls is correct or wrong?. explain!!!

2171

IN electrical field, WHAT ALL THINGS THE CUSTOMER WILL ASK WHILE ORDERING FOR LT PANEL (ALL TYPES OF LOW TENSION PANEL)

2123

What is the direction of current flow in ct secondary...means if the current is flowing from P1 to P2 then what will be the direction of current flow in ct secondaryw

1903

what are the differences between 'exhaust fan', 'heavy-duty exhaust fan' & 'super heavy duty exhaust fan'. what are their power ratings ?

2088

We have received supplies of the ordered material. payments against the supplies also released. Where ST paid 4% against form C. Meanwhile it has been observed that 25% of material supplied was defective. Please suggest whether the issuance of C form from our side would be stopped till settlement of liabilities.

1959

If ROC does not lies inside unit circle,then ? a) Fourier transform converges b) Z transform converges c) Hatly transform converges d) Colpit Transform converges.

2290

Why in power plant projects we see DOL starting method used for motors upto 160 kW instead of star delta method

1848

why we use circuit breakers for switching instead of normal switching device?

1880

pls,send the previous year written test questions.

1923

Why is back emf used for a DC motor? Highlight its significance.

1212

why does a dc machine has high efficiency while working as a generator than as a motor ..

2006

How to select the gauge of wire for winding of motors? How to select number of turns for winding of three phase induction motor?

2746

What is the Good Earth resistance value of G.I & Cu. Chemical Earthing & Normal Pipe Earthing?

2347

What is the resistance of the field winding of a d.c. Shunt generator kept low?

1117