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Electromagnetic-theory Questions Set 52:

Quiz Mode

Find the load current of a 42 Ω transmission line when the source voltage is 80 V.

0.53 A

3.36 A

1.9 A

4.2 A

Solution:

How is normalized power P_n related to normalized electric field E_n for an antenna?

unrelated

P_n = E_n

P_n = (E_n)²

P_n = √(E_n)

Solution:

D.C. generators are installed near the load centers to reduce

(a) iron losses

(b) line losses

(d) corona losses

Solution:

Find the beam coupling factor for a reflex klystron oscillator operating at 4 GHz and whose gap transit time is 0.12 ns.

0.5

0.707

0.662

1.45

Solution:

Calculate the velocity of wave propagation in a conductor with frequency 8 × 10⁸ rad/s and phase constant of 5 × 10⁸ rad/s.

5/8 × 10⁸ rad/s

12 × 10⁸ rad/s

8/5 × 10⁸ rad/s

13 × 10⁸ rad/s

Solution:

In the case of boundary conditions at the interface between two magnetic media, if a non-zero surface current density, K' A/m, exists at the interface, what is the value of H_t1 - H_t2?

1/K'

K'^2

1/K'^2

Solution:

Which type of DC motor is suitable for use with a flywheel to handle intermittent light and heavy loads?

(a) Series motor

(b) Shunt motor

(d) Differentially compounded motor

Solution:

A D.C. motor is to drive a load which has a certain minimum value for most of the time and some peak value for a short duration. Which type of D.C. motor should be selected?

(a) series motor

(b) shunt motor

(d) any of the above

Solution:

A coil with self-inductance of 50 H is connected to the terminals of a 2-volt battery through a 10-ohm resistance. What is the time constant and the maximum current finally established in the circuit?

1 s and 0.3 A

5 s and 0.2 A

3 s and 0.5 A

8 s and 0.8 A

Solution:

The phase velocity of an electromagnetic wave propagating in a hollow metallic rectangular waveguide in the TE10 mode is

equal to its group velocity.

less than the velocity of light in free space.

equal to the velocity of light in free space.

greater than the velocity of light in free space.

Electromagnetic-theory Questions Set 52:

Find the load current of a 42 Ω transmission line when the source voltage is 80 V.

Solution:

How is normalized power P_n related to normalized electric field E_n for an antenna?

Solution:

D.C. generators are installed near the load centers to reduce

Solution:

Find the beam coupling factor for a reflex klystron oscillator operating at 4 GHz and whose gap transit time is 0.12 ns.

Solution:

Calculate the velocity of wave propagation in a conductor with frequency 8 × 10⁸ rad/s and phase constant of 5 × 10⁸ rad/s.

Solution:

In the case of boundary conditions at the interface between two magnetic media, if a non-zero surface current density, K' A/m, exists at the interface, what is the value of H_t1 - H_t2?

Solution:

Which type of DC motor is suitable for use with a flywheel to handle intermittent light and heavy loads?

Solution:

A D.C. motor is to drive a load which has a certain minimum value for most of the time and some peak value for a short duration. Which type of D.C. motor should be selected?

Solution:

A coil with self-inductance of 50 H is connected to the terminals of a 2-volt battery through a 10-ohm resistance. What is the time constant and the maximum current finally established in the circuit?

Solution:

The phase velocity of an electromagnetic wave propagating in a hollow metallic rectangular waveguide in the TE10 mode is

Solution:

Related Question Sets:

Related Topics:

Electromagnetic-theory Questions Set 52:

Find the load current of a 42 Ω transmission line when the source voltage is 80 V.

Solution:

How is normalized power Pn related to normalized electric field En for an antenna?

Solution:

D.C. generators are installed near the load centers to reduce

Solution:

Find the beam coupling factor for a reflex klystron oscillator operating at 4 GHz and whose gap transit time is 0.12 ns.

Solution:

Calculate the velocity of wave propagation in a conductor with frequency 8 × 108 rad/s and phase constant of 5 × 108 rad/s.

Solution:

In the case of boundary conditions at the interface between two magnetic media, if a non-zero surface current density, K' A/m, exists at the interface, what is the value of Ht1 - Ht2?

Solution:

Which type of DC motor is suitable for use with a flywheel to handle intermittent light and heavy loads?

Solution:

A D.C. motor is to drive a load which has a certain minimum value for most of the time and some peak value for a short duration. Which type of D.C. motor should be selected?

Solution:

A coil with self-inductance of 50 H is connected to the terminals of a 2-volt battery through a 10-ohm resistance. What is the time constant and the maximum current finally established in the circuit?

Solution:

The phase velocity of an electromagnetic wave propagating in a hollow metallic rectangular waveguide in the TE10 mode is

Solution:

Related Question Sets:

Related Topics:

How is normalized power P_n related to normalized electric field E_n for an antenna?

Calculate the velocity of wave propagation in a conductor with frequency 8 × 10⁸ rad/s and phase constant of 5 × 10⁸ rad/s.

In the case of boundary conditions at the interface between two magnetic media, if a non-zero surface current density, K' A/m, exists at the interface, what is the value of H_t1 - H_t2?