Top 150+ Solved Broadband Communication Systems MCQ Questions Answer
Q. The fibers mostly not used nowadays for optical fiber communication system are
a. single mode fibers
b. multimode step fibers
c. coaxial cables
d. multimode graded index fibers
Q. Single mode fibers allow single mode propagation; the cladding diameter must be at least
a. twice the core diameter
b. thrice the core diameter
c. five times the core diameter
d. ten times the core diameter
Q. A fiber which is referred as non-dispersive shifted fiber is
a. coaxial cables
b. standard single mode fibers
c. standard multimode fibers
d. non zero dispersion shifted fibers
Q. Standard single mode fibers (SSMF) are utilized mainly for operation in
a. c-band
b. l-band
c. o-band
d. c-band and l-band
Q. Fiber mostly suited in single-wavelength transmission in O-band is
a. low-water-peak non dispersion-shifted fibers
b. standard single mode fibers
c. low minimized fibers
d. non-zero-dispersion-shifted fibers
Q. When optical fibers are to be installed in a working environment, the most important parameter to be considered is
a. transmission property of the fiber
b. mechanical property of the fiber
c. core cladding ratio of the fiber
d. numerical aperture of the fiber
Q. Optical fibers for communication use are mostly fabricated from
a. plastic
b. silica or multicomponent glass
c. ceramics
d. copper
Q. An Si-O bond with a Young’s modulus of 9*1010Nm-1 have an elliptical crack of depth 7nm. The surface energy is 2.29 J. Estimate fracture stress for silica fiber.
a. 4.32*109nm-1
b. 6.32*109nm-1
c. 5.2*109nm-1
d. 3*109nm-1
Q. Calculate percentage strain at break for a Si-O bond with a fracture strength of 3.52*1010Nm-1 and Young’s modulus of 9 *109Nm-1.
a. 3.1 %
b. 2.8 %
c. 4.5 %
d. 3.9 %
Q. Which statistics are used for calculations of strengths of optical fibers?
a. edwin statistics
b. newton statistics
c. wei-bull statistics
d. gamma statistics
Q. What does n denotes in the equation given below, if vc is the crack velocity; A is the constant for the fiber material and KI is the strength intensity factor?
a. refractive index
b. stress corrosion susceptibility
c. strain
d. young’s modulus