Discuss NVQ science and principles in the Electrician Courses : Electrical Quals area at ElectriciansForums.net

Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:   American Electrical Advice Forum

Reaction score
0
A coil is connected to a 100v a.c with 20ms, and supply current taken by the coil is 6a calculate the frequency (50Hz) the overall impedence (16.6 ohms) inductive reactance and inductance of the coil

Calculate the power factor and phase angle of the coil

Sketch a wave form of the voltage/current values which you have just calculated over two complete cycles and use this to explain why the current of an R-L circuit is said to be out of phase by the angle calculated

g) A capacitor is to be connected in parallel with the coil. If the capacitive reactance has the same value, in ohms, as the inductive reactance calculated above, calculate the value of the capacitor needed

If a capacitor is of a higher value is added explain what would happen to the voltage/current phase relationship

If the frequency was increased to 10l3 Hz what would be the new reactance of the capacitor from G above
 
A coil is connected to a 100v a.c with 20ms, and supply current taken by the coil is 6a calculate the frequency (50Hz) the overall impedence (16.6 ohms) inductive reactance and inductance of the coil

Calculate the power factor and phase angle of the coil

Sketch a wave form of the voltage/current values which you have just calculated over two complete cycles and use this to explain why the current of an R-L circuit is said to be out of phase by the angle calculated

g) A capacitor is to be connected in parallel with the coil. If the capacitive reactance has the same value, in ohms, as the inductive reactance calculated above, calculate the value of the capacitor needed

If a capacitor is of a higher value is added explain what would happen to the voltage/current phase relationship

If the frequency was increased to 10l3 Hz what would be the new reactance of the capacitor from G above

Welcome to the forum. Rather than just posting questions like that, maybe explain what help you are needing and how far you have got.
 

Reply to NVQ science and principles in the Electrician Courses : Electrical Quals area at ElectriciansForums.net

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc
This website was designed, optimised and is hosted by Untold Media. Operating under the name Untold Media since 2001.
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock