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Mdcat-past-papers Quiz

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1361. Working principle of magnetic levitation train is according to?



1362. Electric generators and transformers are based on the principles of:



1363. The mathematical equation representing Faraday's law is:



1364. In Fleming right hand rule the middle finger indicates:



1365. The phenomenon in which a changing current in one coil induces an emf in another coil is:



1366. The inductance of a coil depends on



1367. Magnetic flux is maximum when angle between magnetic field and vector area:



1368. An aircraft of wingspan 50m flies horizontally at an area where the vertical component of earth's magnetic field is 2×10⁻⁵T. In order to produce an emf of 1 volt between the aircraft's wingtips its speed should be:



1369. In Fleming's right hand rule, the second finger indicates:



1370. Lenz's law in electromagnetic induction is the direct consequence of the principle of conservation of:



1371. If we give a direct current to transformer's primary coil, then there will be:



1372. In transformer, there is no ................ connection between the two coils but they are..... linked?



1373. Working principle of magnetic levitation train is according to?



1374. The expression for the emf produced by A.C generator is?



1375. In principle, the transformer consists of two coils of copper, electrically insulated from each other, wound on the same?



1376. The induced current will flow in a direction so as to oppose the cause that produces it is statement of:



1377. In an AC generator the emf will be maximum when factor sin ωt is equal to:



1378. In an ideal transformer:



1379. For efficient transfer of electricity through cables over the long distance:



1380. Lenz' law is a form of the: