1- A single phase transformer with a ratio of 6600/400 V takes to no-load current of 0·7 A at 0·24 power factor lagging. If a current of 120 A at a power factor of 0·8 lagging is supplied by its secondary. Estimate the current drawn by the primary winding and power factor.
Added by Kevin R.
Close
Step 1
- The transformer has a voltage ratio of 6600/400 V. - The no-load current on the primary side is 0.7 A with a power factor of 0.24 lagging. - The secondary side supplies a current of 120 A with a power factor of 0.8 lagging. Show more…
Show all steps
Your feedback will help us improve your experience
Sikandar Baig and 86 other Physics 101 Mechanics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
A single-phase transformer with a ratio of 440/110 V takes a no-load current of 5 A at a power factor of 0.2 lagging. If the secondary supplies a current of 120 A at a power factor of 0.8 lagging, estimate the current taken by the primary.
Mahipal K.
A single-phase transformer takes 10 A on no load at a power factor of 0.2 lagging. The turns ratio is 4:1. If the load on the secondary is 200A at a power factor of 0.85 lagging, find the primary current and power factor. Neglect the voltage drop in winding.
Amna K.
A step-up transformer is designed to have an output voltage of 2200 $\mathrm{V}$ (rms) when the primary is connected across a $110-\mathrm{V}$ (rms) source. (a) If the primary winding has 80 turns, how many turns are required on the secondary? (b) If a load resistor across the secondary draws a current of $1.50 \mathrm{A},$ what is the current in the primary, assuming ideal conditions? (c) What If? If the transformer actually has an efficiency of $95.0 \%,$ what is the current in the primary when the secondary current is 1.20 $\mathrm{A}$ ?
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD