Electrical Engineering : Electromagnetic Induction QUESTIONS AND ANSWERS :: part1 : 16 to 20
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
16.The inductance of a coil will increase under all the following conditions except |
| when more length for the same number of turns is provided |
| when the number of turns of the coil increase |
| when more area for each turn is provided |
| when permeability of the core increases |
17.In case of an inductance, current is proportional to |
| voltage across the inductance |
| magnetic field |
| both (a) and (b) |
| neither (a) nor (b) |
18.A laminated iron core has reduced eddy-current losses because |
| more wire can be used with less D.C. resistance in coil |
| the laminations are insulated from each other |
| the magnetic flux is concentrated in the air gap of the core |
| the laminations are stacked vertf-cally |
19.In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will |
| increase |
| decrease |
| remain the same |
| initially increase and then decrease |
20.For a purely inductive circuit which of the following is true ? |
| Apparent power is zero |
| Relative power is.zero |
| Actual power of the circuit is zero |
| Any capacitance even if present in the circuit will not be charged |
More Electromagnetic Induction QUESTIONS AND ANSWERS available in next pages
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