Test: Magnetostatics- 2 - Electrical Engineering (EE) MCQ
20 Questions MCQ Test Topicwise Question Bank for Electrical Engineering - Test: Magnetostatics- 2
A circular conductor of 1 cm radius has an internal magnetic field
where 
, r0 is the radius of the conductor and 
is the unit vector. The total current in the conductor is given by
where
, r0 is the radius of the conductor and is the unit vector. The total current in the conductor is given by
What is the value of mutual inductance between an infinitely long straight conductor along the y-axis and a rectangular single turn coil situated in x-y plane with its corners located at point (a, 0), (a + d, 0), (a, h) and (a + d, h) as shown in figure below?
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Assertion (A): The force acting between two parallel wires carrying currents is directly proportional to the individual currents and inversely proportional to the square of the distance between them,
Reason (R): The force is repulsive if the two currents I1 and I2 are in the same directions and attractive if in opposite directions.
Reason (R): The force is repulsive if the two currents I1 and I2 are in the same directions and attractive if in opposite directions.
is the generalization of
Consider the volume current density distribution in cylindrical co-ordinates as
Where a and b are inner and outer radii of the cylinder as shown in figure below
Now, consider the value of magnetic field intensity in various regions I, II and III respectively obtained as:
Which of the above found values of H are correct for the respective regions?
Assertion (A): It is not possible to have isolated magnetic charges.
Reason (R): The magnetic flux lines always close upon themselves.
Match List-l with List-lI and select the correct answer using the codes given below the fists:
List-l
A. Gauss’s law for magnetostatic fields
B. Gauss’s law for electrostatic fields
C. Conservativeness of electrostatic fields
D. Ampere's law
List-lI
Codes:
A B C D
(a) 5 4 1 2
(b) 3 1 4 5
(c) 3 4 1 5
(d) 5 1 4 2
The magnetic vector potential is given by
The total magnetic flux crossing the surface ϕ = π/2 , 1 ≤ ρ ≤ 2 m , 0 ≤ z ≤ 5 m is
Which of the following is not a source of magnetostatic fields?
Consider the following statements associated with the characteristics of static magnetic field:
1. It is solenoidal.
2. Magnetic flux lines are not closed in certain cases.
3. The total number of flux lines entering a given region is equal to the total number of flux lines leaving the region.
4. It is conservative.
Which of the above statements is/are not correct?
What are the units for the product of two values whose respective units are Henrys and Amperes?
What are the possible dimensions for a rectangular coil that has a magnetic flux of 9.5 webers when in a magnetic field of strength 19 Tesla at an angle of 60° from the perpendicular to the plane of the coil?
What is the change in magnetic fiux in a coil of area 5 m2 as its orientation relative to the perpendicular of a uniform 3.0 T magnetic field changes from 45° to 90°?
is solenoidal, which of these is true?
If 
, the value of 
around the closed circular quadrant shown in the given figure is
is based onGiven a vector field 
in cylindrical coordinates. For the contour as shown below, 
is
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