ECAT Pre General Science Physics Chapter 14 Electromagnetism Online Test With Answers

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ECAT Pre General Science Physics Chapter 14 Electromagnetism Online Test

Sr. # Questions Answers Choice
1 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into Voltmeter Avometer Ammeter None of these
2 A resistance used in voltmeter is called shunt resistance high resistance low resistance zero resistance
3 In order to make a voltmeter, high resistance is connected with galvanometer, in perpendicular may be paralled or pendicular series none of these
4 Which is modified form of galvanometer potentiometer battery voltmeter slide wire bridge
5 A voltmeter is used to measure the potential difference current temperature resistance
6 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as modification voltage current resistance
7 A full-scale deflection is obtained in a galvanometer with a current of few ampere volts milliampere ohm
8 The current is measured in volts watt ampere ohm
9 Ammeter is used to measure voltage resistance voltage and current current
10 A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called dead beat galvanometer stable galvanometer shunt galvanometer sensitive galvanomter
11 The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of ammeter voltmeter galvanometer avo-meter
12 The torque per unit twist of coil is called proportionality constant gravitational constant boltzman constant coupling constant
13 Method "lamp and scale arrangement" used to measure the angle of deflection restoring torque magnetic field strength current
14 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made Sensitive Accurate Stable None of these
15 The angle of deflection of coil can be measured by the one method three method two method none of these
16 A shunt resistance parallel to the galvanometer is used to convert it into avometer millimeter voltmeter none of these
17 In a moving coil galvanometer, the deflecting couple depends upon area of the coil number of turns of coil value of magnetic field all of the above
18 For the conversion of galvanometer into voltmeter, we connect a small resistance in series with galvanometer small resistance in parallel with galvanometer high resistance in parallel with galvanometer high resistance series with galvanometer
19 The working of galvanometer depends upon torque exerted on a current carrying coil in magnetic field electric field gravitational field nuclear field
20 Galvanometer is a device used for the detection of voltage current temperature pressure
21 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon Heating effect of current Chemical effect of current Magnetic effect of current Electromagnetic effect of current
22 To convert galvanometer into ammeter we connect small resistance in parallel with galvanometer small resistance in series with galvanometer high resistance in series with galvanometer high resistance in parallel with galvanometer
23 The galvanometer can be made sensitive if the value of the factor C/BAN is constant small large none of these
24 A galvanometer is an instrument used to measure voltage across a circuit detect current in a circuit measure current flowing through a circuit none of these
25 The current sensitivity of the galvanometer is C/BAN BAN/C CAN/B CBN/A
26 The vector representation of force experience give the direction of magnetic field current length of conductor force
27 F = I(L x B) is a vector scalar unit vector none of these
28 The gavanometer constant of a moving coil galvanometer is given by K=BAN/C K=BN/CA K=NAC/B K=C/BAN
29 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is 90<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span> 75<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span> 0<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span> 180<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°</span>
30 The CRO is used for displaying the waveform of a given current voltage both of them none of them
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