हिंदी

What is the Turns Ratio I.E., Transformer Ratio, Ns: Np, in an Ideal Transformer Which In-creases Ac Voltage from 220 V to 33000 V? - Physics (Theory)

Advertisements
Advertisements

प्रश्न

What is the turns ratio i.e., transformer ratio, ns: np, in an ideal transformer which in-creases ac voltage from 220 V to 33000 V?

एक पंक्ति में उत्तर
Advertisements

उत्तर

`"n"_s/"n"_p = "E"_s/"E"_p = 33000/220 = 150`

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
2013-2014 (March)

APPEARS IN

वीडियो ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्न

Explain the construction and working of the transformer. 


State two factors on which the magnitude of induced e.m.f. depend.


Name three losses of energy in a transformer. How are they minimized?


The primary coil of a transformer has 200 turns while the secondary coil has 1000 turns. What type of transformer is this? if the input voltage is 10V, what will be the output voltage?


Explain the construction of transformer.


The transformer voltage induced in the secondary coil of a transformer is mainly due to ______.

Read the following paragraph and answer the question:


Long distance power transmissions

The large-scale transmission and distribution of electrical energy over long distances is done with the use of transformers. The voltage output of the generator is stepped up. It is then transmitted over long distances to an area sub-station near the consumers. There the voltage is stepped down. It is further stepped down at distributing sub-stations and utility poles before a power supply of 240 V reaches our homes.

A power transmission line feeds input power at 2300 V to a step down transformer with its primary windings having 4000 turns. The number of turns in the secondary in order to get output power at 230 V are ______.


A transformer is essentially an a.c. device. It cannot work on d.c. It changes alternating voltages or currents. It does not affect the frequency of a.c. It is based on the phenomenon of mutual induction. A transformer essentially consists of two coils of insulated copper wire having different numbers of turns and wound on the same soft iron core.

The number of turns in the primary and secondary coils of an ideal transformer is 2000 and 50 respectively. The primary coil is connected to a main supply of 120 V and secondary coil is connected to a bulb of resistance 0.6 Ω.

The value of current in the bulb is ______.


A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44 W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?


An ideal transformer converts 170 V a.c. to 1.70 KV a.c. to transmit a power of 3.4 KW. If primary coil has 500 turns then alternating current in secondary coil is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×