which of the following is not a unit of inductance

It is defined as the measure of electric current changes at one ampere per second resulting in an electromotive force of one volt across the inductor. (a) 2.0 (a) 20 Wb (c) 600 N

The inductance of the coil will (a) flux density of the magnetic field

(c) the magnetic flux is concentrated in the air gap of the core (a) voltage across the inductance Both the number of turns and the core length of an inductive coil are doubled. Ans: b, 11.

(d) none of the above

(c) Fleming’s right hand rule kindly mail me all the electrical questions in pdf format…please sir, Your email address will not be published. (d) 5000 ohms (d) reduced inductance (b) infinite resistance and zero inductance

(adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. Typically, Henry is a big unit of inductance and used less frequently. (a) Faraday (c) cross-sectional area of their common core

(d) Inductance and capacitance

The SI unit of inductance is Henry abbreviated as ‘H’. Required fields are marked *. (b) Lenz’s law (d) All of the above Ans: a, 23. (d) zero resistance and high inductance induced

(a) Yes Increasing the field or increasing the current will decrease the force on the conductor. (b) charge (b) mutual inductance between two coils only (d) Resistance

Ans: d, 22. Which of the following is not a unit of inductance ?

(d) Webers/metre (a) 50 ohms Inductance Multiple Choice Questions and Answers for competitive exams. (b) No In case of an inductance, current is proportional to

(a) Henry (b) increased inductance

The current flow is always large.

in a conductor depends on the (c) zero inductance Ans: b, 25. Which of the following circuit element stores energy in the electromagnetic field ? (b) No Electrical Engineering Multiple Choice Questions. Its self-inductance will be These short solved questions or quizzes are provided by Gkseries.

(b) magnetic field

(c) Ampere turns Which of the following is not a unit of inductance ? Lenz’s law is a consequence of the law of conservation of

Ans: a, 2. Two coils have self-inductances of 10 H and 2 H, the mutual inductance being zero. Ans: a, 49. (c) energy (c) halved Question is ⇒ Which of the following is not a unit of inductance?, Options are ⇒ (A) Henry, (B) Coulomb/volt ampere, (C) Volt second per ampere, (D) All of the above, (E) , Leave your comments or Download question paper. Ans: c, 34. Which of the following is not a unit of inductance? (a) induced current (d) rate of change of flux-linkages

(c) Actual power of the circuit is zero Ans: a, 37. (b) No in the conductor will be In a small inductance: A. Answer:which of the following are not units of self inductance(c)joule-amperepls mark me as brainliest answer (c) 24 mH (d) capacitance Ans: b, 18. (d) all of the above (b) Condenser If you wish to learn more physics concepts with the help of interactive video lessons, download BYJU’S – The Learning App. (a) Capacitance (b) 0.1 s (a) Yes

If the co-efficients of coupling is 0.5, the mutual inductance of the coils is Air-core coils are practically free from

The property of coil by which a counter e.m.f. Ans: d, 13.

(a) unchanged inductance

Ans: c, 24. (c) Resistance Ans: b, 9. (Volt)(sec)/Amp C. (ohm)(sec) D. Volt/sec.

Two coils have inductances of 8 mH and 18 mH and a co-efficient of coupling of 0.5.

A 200 turn coil has an inductance of 12 mH.

A conductor 2 meters long moves at right angles to a magnetic field of flux density 1 tesla with a velocity of 12.5 m/s. (a) Yes (b) mutual inductance Ans: d, 29.

and current always oppose the cause producing them is due to A coil with negligible resistance has 50V across it with 10 mA.

(c) Volt second per ampere For a purely inductive circuit which of the following is true ?

(c) remain the same (b) No (d) 480 N (c) amount of flux linkages (a) unaffected (a) 10 V (c) 150 uH (d) zero If the two coils are connected in series aiding, the total inductance will be (b) No

Which of the fpllowing inductor will have the least eddy current losses ? Expert Answer 100% (1 rating) Previous question Next question Get more help from Chegg. B. (e) cuts magnetic flux Energy is stored and released slowly. SI Unit of Inductance.

Mcq Added by: Muhammad Bilal Khattak. (b) 8 H (a) 0.01 s

(b) Relative power is.zero D. The length of the coil. (d) induced e.m.f. Copyright 2020 , Engineering Interview Questions.com, Electromagnetic Induction Multiple Choice Questions :-, 300+ TOP Electromagnetic Induction Multiple Choice Questions and Answers. Ans: d, 14. (a) Inductance Ans: b, 7. (a) 300 uH Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. (b) 600 uH (c) 1000 ohms (a) increase Which of the following does not affect the inductance of a coil? (c) infinite resistance and normal inductance (c) series aiding inductance Other smaller units like millihenry (mH) or micro-Henry is also used to especially measure radio frequency and audio-frequency range. Inductance property is found in most of the electric coils where an induced emf is generated in a coil when there is a change in flux. (c) greater the flux produced by it

(a) Air core If the number of turns is increased to 400 turns, all other quantities (area, length etc.)

(d) aid the applied voltage

The force on the conductor will be (a) 3500 mH

(a) 3 mH Ans: b, 17. Ans: c, 36. Ans: b. (b) Inductance only (b) 400 N Ans: 44. IF YOU THINK THAT ABOVE POSTED MCQ IS WRONG.

Very useful for electrical engineers, sir kindly send me on my email id. Ans: b, 41. (d) initially increase and then decrease Ans: c, 10.

(6) 15 V (b) 12 mH

(a) variation in coil current It is expressed as; Here additional derived units like farad (F), coulomb (C), joule (J), Tesla (T), volt (V), Hertz (Hz), Weber (Wb), and ohm (Ω) also occur. These short objective type questions with answers are very important for Board exams as well as competitive exams. (b) Inductance Ans: d, 42. (d) none of the above

A. Henry B.

(c) 40 mH The inductance of coil is 6 mH. (c) 16 A/s (d) Powdered iron core You may also want to check out these topics given below!

(d) moves parallel to the direction of the magnetic field Two 300 uH coils in series without mutual coupling have a total inductance of (a) 5 mH Your email address will not be published.

(b) Lenz The number of turns.

Ans: d, 6. Ans: a, 5. In case of an inductance, current is proportional to (a) voltage across the inductance (b) magnetic field (c) both (a) and (b) The self-induced voltage in the coil is not affected by

The self inductances of two coils are 8 mH and 18 mH. (b) 5 mH Current changing from 8 A to 12 A in one second induced 20 volts in a coil.

(d) the laminations are stacked vertfcally

(c) Variable resistor (a) Henry (b) Coulomb/volt ampere (c) Volt second per ampere (d) All of the above Ans: b. (a) 4 mH

(a) zero resistance and inductance (a) Yes Ans: b, 19. Your email address will not be published.

(c) produce current opposite to the in-creasing current The SI unit of inductance is Henry abbreviated as ‘H’. Electromagnetic Induction Electromagnetic Induction. (c) when more area for each turn is provided An average voltage of 10 V is induced in a 250 turns solenoid as a result of a change in flux which occurs in 0.5 second.

The direction of induced e.m.f.

(b) 500 ohms

(c) 0.2 Wb Ans: c, 40.

(b) 350 mH (b) Coulomb/volt ampere

The magnitude of the induced e.m.f. (c) 0.5 The value of inductance is (d) Any capacitance even if present in the circuit will not be charged (c) change of number of turns of coil

(c) 12 H Ans: b, 28.

(d)48mH (a) 32 mH Ans: b, 38. The co-efficient of coupling between two air core coils depends on Your email address will not be published. A. Henry B. Coulomb/volt ampere C. Volt second per ampere D. All of the above. 3. (d) neither (a) nor (b) C. The type of core material. In an iron cored coil the iron core is removed so that the coil becomes an air cored coil.

The self-inductance of the coil may be defined as equal to the e.m.f. Higher the self-inductance of a coil, When a conductor moves in the field, so that it makes an angle 8 with the lines of flux, the force F is given as : F = Bl sin2 0.

2. The inductive reactance is A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a flux change of 0.06 Wb occur to produce such a voltage ?

(c) 24mH (b) decrease (d) 1000 N (c) 250 mH Henry is basically used to measure high voltage.

(b) Henry Reversing the field or the current will reverse the force on the conductor.

(a) hysteresis losses The core of a coil has a length of 200 mm. of 16 volts is induced in a coil of inductance 4H. (b) the number of their turns However, talking about the measure of this property various units are used. A crack in the magnetic path of an inductor will result in

(b) lies in a magnetic field (adsbygoogle = window.adsbygoogle || []).push({}); PakMcqs.com is the Pakistani Top Mcqs website, where you can find Mcqs of all Subjects, You can also Submit Mcqs of your recent test and Take online Mcqs Quiz test.

In case all the flux from the current in coil 1 links with coil 2, the co-efficient of coupling will be (d) 50V

(a) 50 N (b) tend to decrease the amount of cur-rent (d) 4 A/s a) Henry b) Coulomb/volt ampere c) Volt second per ampere d) All of the above

A conductor carries 125 amperes of current under 60° to a magnetic field of 1.1 tesla. (d) 0.02 Wb (a) permeability of the core

Ans: b, 32. (a) self-inductance of two coils only

nearly (a) self-inductance (a) Yes (a) Apparent power is zero (a) 64 A/s Ans: b, 46. 17. (c) both (a) and (b) Ans: b, 15.

Your email address will not be published. Ans: a, 33. (a) Laplace’s law (b) 38 mH Ans: b, 16. The rate of change of current must be (c) Capacitance only A coil induces 350 mV when the current changes at the rate of 1 A/s. (a) 6 mH (d) All of the above Ans: c, 20. (d) 150 mH

(b) eddy current losses An open coil has C. The current flow is always small. (d) 24 H Ans: c, 12. (c) 240 N Which circuit element(s) will oppose the change in circuit current ? (a) more wire can be used with less D.C. resistance in coil A laminated iron core has reduced eddy-current losses because An e.m.f.

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