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Electromagnetic-theory Questions Set 73:

Quiz Mode

If ω is the angular velocity and β is the phase constant, the group velocity is given by

dω/dβ

β/ω

ω/β

dβ/dω

Solution:

Two equal and opposite charges separated by a small distance is called a

Dipole moment

Dipole

Polar dielectrics

Solution:

Find the inductance when the energy stored in the inductor is 2 units and the current is 16A.

16.4mH

15.6mH

17.9mH

13.2mH

Solution:

The magnetic moment of a field with a current of _____ A and an area of 5 units is equal to 40 units.

1.6 A

200 A

0.625 A

8 A

Solution:

A wave has an attenuation coefficient of 0.2 and a resistance of 15 Ω. Find the characteristic impedance of the line.

75 Ω

3 Ω

150 Ω

37.5 Ω

Solution:

A quarter-wave transmission line that is open-circuited at the far end behaves as:

L and C in parallel

L and C in series

An inductance

A capacitance

Solution:

A parabolic antenna has a radius of 10 m and a loss factor of 60%. Calculate the gain at an operating frequency of 5 GHz.

55.96 dB

3.97 dB

9.99 dB

60.39 dB

Solution:

As the load on a DC shunt motor is increased, the motor speed will:

(a) Reduce slightly

(b) Increase slightly

(d) Remain unchanged

Solution:

A transformer has 500 primary turns and 10 secondary turns. If the secondary has a resistive load of 15 ohms, the currents in the primary and secondary respectively are:

0.16 A, 0.16 A

0.16 A, 3.2×10⁻³ A

3.2×10⁻³ A, 0.16 A

3.2×10⁻³ A, 3.2×10⁻³ A

Solution:

Consider the following statements about the magnetic interface conditions:

The normal component of the magnetic flux density (B_n) is discontinuous, but the tangential component (B_t) is always continuous at an interface.

All field components are discontinuous.

Which of the following is correct?

Both 1 & 2 are true

Only 1 is correct

Only 2 is correct

Both 1 & 2 are untrue

Electromagnetic-theory Questions Set 73:

If ω is the angular velocity and β is the phase constant, the group velocity is given by

Solution:

Two equal and opposite charges separated by a small distance is called a

Solution:

Find the inductance when the energy stored in the inductor is 2 units and the current is 16A.

Solution:

The magnetic moment of a field with a current of _____ A and an area of 5 units is equal to 40 units.

Solution:

A wave has an attenuation coefficient of 0.2 and a resistance of 15 Ω. Find the characteristic impedance of the line.

Solution:

A quarter-wave transmission line that is open-circuited at the far end behaves as:

Solution:

A parabolic antenna has a radius of 10 m and a loss factor of 60%. Calculate the gain at an operating frequency of 5 GHz.

Solution:

As the load on a DC shunt motor is increased, the motor speed will:

Solution:

A transformer has 500 primary turns and 10 secondary turns. If the secondary has a resistive load of 15 ohms, the currents in the primary and secondary respectively are:

Solution:

Consider the following statements about the magnetic interface conditions:

The normal component of the magnetic flux density (B_n) is discontinuous, but the tangential component (B_t) is always continuous at an interface.

All field components are discontinuous.

Which of the following is correct?

Solution:

Related Question Sets:

Related Topics:

Electromagnetic-theory Questions Set 73:

If ω is the angular velocity and β is the phase constant, the group velocity is given by

Solution:

Two equal and opposite charges separated by a small distance is called a

Solution:

Find the inductance when the energy stored in the inductor is 2 units and the current is 16A.

Solution:

The magnetic moment of a field with a current of _____ A and an area of 5 units is equal to 40 units.

Solution:

A wave has an attenuation coefficient of 0.2 and a resistance of 15 Ω. Find the characteristic impedance of the line.

Solution:

A quarter-wave transmission line that is open-circuited at the far end behaves as:

Solution:

A parabolic antenna has a radius of 10 m and a loss factor of 60%. Calculate the gain at an operating frequency of 5 GHz.

Solution:

As the load on a DC shunt motor is increased, the motor speed will:

Solution:

A transformer has 500 primary turns and 10 secondary turns. If the secondary has a resistive load of 15 ohms, the currents in the primary and secondary respectively are:

Solution:

Consider the following statements about the magnetic interface conditions: The normal component of the magnetic flux density (Bn) is discontinuous, but the tangential component (Bt) is always continuous at an interface. All field components are discontinuous. Which of the following is correct?

Solution:

Related Question Sets:

Related Topics:

Consider the following statements about the magnetic interface conditions:

The normal component of the magnetic flux density (B_n) is discontinuous, but the tangential component (B_t) is always continuous at an interface.

All field components are discontinuous.

Which of the following is correct?