A power transmission line feeds input power at 2400 V to a step down transformer with its…
Physics · Class 12 · CBSE — Alternating Current
A power transmission line feeds input power at 2400 V to a step down transformer with its primary windings having 4000 turns. What should be the number of turns in the secondary windings in order to get output power at 240 V ?
- 400
- 420
- 424
- 436
Answer
(A) 400
Sign up free on Edukali to view the step-by-step worked solution and practice thousands of similar questions.
Related practice questions
- In a transformer the transformation ratio is 0.3. If 220 V ac is fed to the primary, then the voltage across…
- A transformer is used to light 140 W, 24 V lamp from a 240 V ac mains. If the main current is 0.7 A, the…
- In a series LCR circuit, the phase difference between the voltage and the current is 45°. Then the power…
- A charged 30 μF capacitor is connected to a 27 mH inductor. The angular frequency of free oscillations of the…
- A voltage u= u_ 0 t applied to a circuit drives a current i = i _ 0 ( t + ) in the circuit. The average power…
- In the question number 4, the peak voltage of the source is
- When an ac voltage of 220 V is applied to the capacitor C , then
- At resonance frequency the impedance in series LCR circuit is
More Alternating Current questions · Browse all practice questions