1) On which factors does the magnitude of force depend, according to Coulomb's law?
a. Size and shape of charges
b. Sign (polarity) of charges
c. Medium in which charges are placed
d. Displacement shown by the charges
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2) Which among the following statements related to point charge is/are true?
a. Geometrical dimensions of point charges are negligible
b. Point charge is basically an electric charge located at any surface or space
c. Variation in the number of electrons in an atom constitutes the charge
d. All of the above
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3) In the vector notation of force F21, what does the second number at suffix indicate?
a. Force exerted by the point charge
b. Force exerted on a point charge
c. Both a and b
d. None of the above
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4) What is the purpose of Gauss's law?
a. To determine the enclosed charge
b. To estimate the flux passing through the closed surface
c. Both a and b
d. None of the above
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5) The field is said to have zero divergence, if the number of field lines arriving are ______ to/than the number of field lines departing the volume
a. Less
b. Greater
c. Equal
d. None of the above
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6) According to Maxwell's first equation, the electric flux departing per unit volume is equal to _______
a. Line charge density
b. Surface charge density
c. Volume charge density
d. None of the above
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7) Under which condition/s of the selected path, is the work done said to be zero?
a. Open loop
b. Closed loop
c. Both a and b
d. None of the above
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8) Along the parabola x = 2y2, what will be the value of work done in carrying the charge of -4μJ, from point P1 (3,1,-1) to P2 (4,2,-1) in the electric field E = y ax + x ay ?
a. 4 μJ
b. 14 μJ
c. 28 μJ
d. 56 μJ
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9) Electric field intensity is defined as the ratio of _____ to the test charge.
a. Displacement
b. Pressure
c. Force
d. Current
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10) Which parameter is considered as a reference for the measurement of zero potential?
a. Field
b. Ground
c. VCC
d. None of the above
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11) What is the value of rate of change of charge density for steady state current?
a. 0
b. 0.5
c. 1
d. ∞
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12) Which consequence/s is/are likely to occur due to polarization?
a. Increase in electric flux density
b. Decrease in electric flux density
c. Stability in electric flux density
d. None of the above
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13) If the material is isotropic and linear, what would be the direction of electric field intensity and the polarization at each point?
a. Parallel
b. Perpendicular
c. Both a and b
d. None of the above
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14) Poisson's equation is derived from ________
a. Laplace equation
b. Guass law
c. Thevenin's theorem
d. Kirchoff's law
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15) If the volume charge density is found to be zero, then what would be the transformed type of Poisson's equation especially due to presence of line, point or surface charge?
a. ▾2 V = - (ρv / ε)
b. ▾2 V = - ρv
c. ▾2 V = 1
d. ▾2 V = 0
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16) Consider the equation of spherical capacitor given below. What does the potential between the spheres specify?
Equation: V = -(V0 / r) [ab / a-b] + V0[a / a-b]
a. As an integral of capacitance
b. As a derivative of radius
c. As an index of radial direction
d. As a function of position
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17) What is the value of cross product for two similar unit vectors?
a. Zero
b. Infinity
c. Third unit vector
d. Negative vector
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18) Which co-ordinate/s serve/s to be a function of magnitude of magnetic field intensity due to infinite long straight filament?
a. 0
b. Φ
c. z
d. r
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19) What is the direction of magnetic field intensity vector due to infinite long straight filament?
a. Radial
b. Elliptical
c. Parabolic
d. Circumferential
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20) In Ampere's circuital law, what is the purpose of an 'Amperian Path'?
a. Computation of magnetic field intensity
b. Determination of differential element of path length
c. Estimation of electric flux density
d. Detection of loop in a constant plane
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21) Which nature of applied voltage results in the flow of conduction current in the displacement current concept?
a. Constant
b. Variable
c. Both a and b
d. None of the above
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22) Which form of Maxwell's equation specifies the fundamental relationship between the electric and magnetic fields in time varying field?
a. Point form
b. Integral form
c. Exponential form
d. None of the above
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23) Maxwell's second equation of static field is a point form of _________
a. Ampere's circuital law
b. Guass's law
c. Lenz law
d. Biot Savart law
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24) If the rate of attenuation is high for good conductors at radio frequency, where does an input wave get reduced to?
a. Zero
b. Infinity
c. Minor proportion of its initial strength value
d. Major proportion of its final strength value
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Answer
Explanation
Related Ques
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ANSWER: Minor proportion of its initial strength value
Explanation:
No explanation is available for this question!
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25) Which primary constant of transmission line is exhibits its dependency of value on the cross-sectional area of conductors?
a. Resistance (R)
b. Inductance (I)
c. Conductance (G)
d. Capacitance (C)
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26) Which parameter is much larger than the resistance at radio frequencies in RF circuits?
a. Inductive reactance
b. Capacitive susceptance
c. Shunt conductance
d. Series admittance
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27) Which operation is performed over the in phase incident and reflected waves in order to obtain maximum voltage of SWR?
a. Addition
b. Subtraction
c. Differentiation
d. Integration
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28) What would be the Standing Wave Ratio (SWR) for a line with reflection coefficient equal to 0.49?
a. 0.01
b. 2.12
c. 2.921
d. 3.545
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29) How does the short-circuited line behave for the first λ/4 distance if input impedance is purely reactive?
a. As an inductance
b. As a resistance
c. As a capacitance
d. As a conductance
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