Which one of the following is the major difference between single mode and multi mode fibers?

Aeronautical & Aerospace Engineering : Avionics - Quiz(MCQ)

Core material

Cladding material

Cladding diameter

Core diameter

Correct Answer : Core diameter

Explanation : The major difference between single mode fibre and multi-mode fibre is that the core diameter of single mode fibre is of the same order of magnitude as the wavelength of the light source (laser diode). Pulse dispersion is reduced in single mode fiber.

Recently Updated in Avionics Questions

What advantage does the concept of IS2 add to the pave pace avionic architecture?

Cost reduction

Easy maintenance

Better performance

Software compatibility

Correct Answer : Option (A) : Cost reduction

Explanation : The total cost of sensors used in avionic systems costs around 70% of the total avionic system. IS2 is the concept of an integrated sensor system in which the sensors are shared by different avionic components thus reducing the overall cost.

Which type of avionic architecture was the first to use DIAS?

Pave pillar architecture

Federated architecture

Centralized architecture

Open system architecture

Correct Answer : Option (B) : Federated architecture

Explanation : Federated avionic architecture is a type of second generation architecture in which the data from each avionic component was converted into digital information and sent to the main frame computer. This technology was called the DIAS or Digital Avionics Information System.

Which avionic architecture allows the existence of heavily armed single seat fighters with a variety of weapons?

Centralized architecture

Pave pillar architecture

Distributed architecture

Federated architecture

Correct Answer : Option (B) : Pave pillar architecture

Explanation : In a typical single seat fighter aircraft the pilot has to play the role of both controlling the aircraft and weapons management as opposed to a twin seat aircraft where the pilot flies the plane and the RIO or Radar Intercept Officer manages the weapons. Pave pillar architecture allows the pilot to be the weapons system manager without which single seat fighter aircraft like F-22 and the F-35 would not have been possible.