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Physics ECAT Pre Engineering Chapter 14 Electromagnetism Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | Amperean path is a: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Closed path<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Rectangular path<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Circular path<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Any of above<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Broken path<o:p></o:p></span></p> |
| 2 | Magnetic induction is also called as: | <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Ampere’s law<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Faraday’s law<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Lenz’s law<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Newton’s law<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Coulomb’s law<o:p></o:p></span></p> |
| 3 | if the field is directed along the normal to the area, then flux is: | <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Maximum<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Equal to zero<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Equal to BA<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Minimum<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Both (A) and (C)<b><o:p></o:p></b></span></p> |
| 4 | the current is pass
through the straight wire. The magnetic field established around it has its
lines of force: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Circular and endless<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Oval in shape and endless<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Straight<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Parabolic<o:p></o:p></span></p> All are true |
| 5 | Magnetic lines of force: | <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Cannot intersect at all<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Intersect at infinity<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Intersect within magnet<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Intersect at Neutral Point<o:p></o:p></span></p> <span style="font-family: "Times New Roman", serif; font-size: 16px; text-align: justify;">None of these</span> |
| 6 | magnetic field is a: | <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Vector quantity<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Scalar quantity<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Scalar as well as scalar quantity<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Any of (A) or (B)<o:p></o:p></span></p> Neither (A) nor (B) |
| 7 | The pointer of a
magnetic compass: |
<p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Is affected only by permanent magnets<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Align itself parallel to the applied magnetic field<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Vibrates in the magnetic field of the current<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Aligns itself perpendicular to the magnetic field<o:p></o:p></span></p> Both (C) and (D) |
| 8 | It is customary represent a current flowing towards the reader by a symbol | (x) (+) (.) (-) (<span style="font-family: "Times New Roman", serif; font-size: 12pt; text-align: justify;">÷)</span><p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif""><o:p></o:p></span></p> |
| 9 | A current carrying conductor sets up its own: | <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Electric field<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Nuclear field<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Magnetic field<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Both (A) and (C)<b><o:p></o:p></b></span></p> All of these |
| 10 | In the region surrounding a current carrying wire: | <span style="font-family: "Times New Roman", serif; font-size: 12pt; text-align: justify;">A magnetic field is setup</span><p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif""><o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">The lines of force are elliptical<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Direction of lines of forces depends upon direction of current<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Both (A) and (C)<b><o:p></o:p></b></span></p> All of these |
| 11 | When some compass needles are placed on a card board along a circle with the center at the wire, they will | <p class="MsoNormal" style="text-align:justify"><span style="font-size: 12pt; line-height: 107%; font-family: "Times New Roman", serif;">Point the direction of N-S<b><o:p></o:p></b></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Set themselves tangential to the circle<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">Point in the direction of E-W<o:p></o:p></span></p> <p class="MsoNormal" style="text-align:justify"><span style="font-size:12.0pt; line-height:107%;font-family:"Times New Roman","serif"">None of these<o:p></o:p></span></p> Point in direction of S-E |
| 12 | Current is measured in | volts watt ohm ampere |
| 13 | Resistance is measured in | volts ampere ohm watt |
| 14 | Avo-meter is used of measure the | current, voltage voltage, resistance resistance, current current, voltage and resistance |
| 15 | A resistance used in galvanometer to make it voltmeter is called | shunt resistance high resistance zero resistance none of these |
