Microwave link repeaters are typically 50 Km apart because of

1.	Microwave link repeaters are typically 50 Km apart because of
A.	Atmospheric attenuation
B.	Earth’s curvature
C.	Output tube power limitation
D.	Both a & b
Answer» C. Output tube power limitation

Discussion

No Comment Found

Related MCQs

Consider the following statements:1. Additional cavities serve to velocity-modulate the electron beam and produce an increase in the energy available at the output.2. The addition of intermediate cavities between the input and output cavities of the basic klystron greatly improves the amplification, power output, and efficiency of the klystron.Which of the above statements is/are correct?
In a two cavity klystron, the input cavity resonator is also known as
Direction: Question consists of two statements, one labelled as the 'Assertion (A)' and the other as 'Reason (R)'. Examine these two statements carefully and select the answer to this question using the codes given below:Assertion (A): TEM (Transfer Electro-Magnetic) waves cannot propagate within a hollow waveguide of any shape.Reason (R): For a TEM wave to exist within the waveguide, lines of the H field must be closed loops that require an axial component of E which is not present in a TEM wave.
An X - band pulse cylindrical magnetron has the following parameters:Anode voltage = 26 kV, Beam current = 27 A, Magnetic flux density = 0.336 Wb/m2, Radius of Cathode Cylinder = 5 cm, Radius of Vane edge to center = 10 cm.The following data regarding angular frequency and Cut off voltage is given.(a) Angular frequency = 5.91 × 1010 rad(b) Cut off voltage = 139.50 kV(c) angular frequency = 3.91 × 109 radian(d) Cut off voltage = 239.39 kVWhich is the correct option?
A waveguide section in microwave circuits will act as a:
Magnetron is a:a) O - type tubeb) a low power devicec) a high power deviced) an oscillatorOut of the above following is the correct option:
Characteristics impedance of a waveguide with cross sectional dimensions 5 cm and 4 cm and cut-off frequency to frequency of operation ratio equal to 0.6, assuming dielectric constant to be 9 is
Match the two lists and choose the correct answer from the code given below:List IList II(a) TE mode(i) No magnetic field in the direction of preparation(b)TM mode(ii) No electric, no magnetic field in the direction of propagation(c) TEM mode(iii) Both electric and magnetic field present in the direction of propagation(d) Hybrid mode(iv) No electric field in the direction of propagation
If the maximum electron density for E layer in ionosphere is 9 × 106 electrons/cm3, then its critical frequency is
An air-filled rectangular waveguide has dimensions of a = 6 cm and b = 4 cm. The signal frequency is 3 GHz. Match List 1 with List 2 and select the correct answer using the code given below the lists:List 1List 2 1. TE10 A. 2.5 GHz 2. TE01 B. 3.75 GHz 3. TE11 C. 4.506 GHz 4. TM11 D. 4.506 GHz

Microwave link repeaters are typically 50 Km apart because of

Discussion

No Comment Found

Related MCQs

Reply to Comment