Digital circuit can be made by the repeated use of:-

Which process gives the laser its special properties as an optical source;-

The value of β for a transistor is generally;-

One graded index fibers are made with the help of vapor phase deposition technique:-

When a pure semiconductor is heated , its resistance ;-

The collector base junction in a transistor has;-

Which one is a type of telecom network:-

The charge in circuit switching is based on;-

_________ results from small lateral exerted on the fiber during the cabling process:-

Meridional rays in graded index fibers follows:-

Increasing the length of an optical fiber link can result in;-

The bit rate of the digital  voice phone  call is:-

Alignment accuracy of the order ___________ is obtained using the three glass rod alignment sleeve;-

How many types of selectors are there in the strowger switching system:-

The ISDN is categorized into ___________ types;-

_____________ switching has used the transfer of coded values from input to output:-

The DC resistance  of a crystal diode is ____________ its AC resistance:-

A holes in a semiconductor is defined as;-

The lower energy level contains more atoms than upper level under the conditions of _________________:-

An earth station receiver consist of:-

The most commonly used  transistor  arrangement is ____________ arrangement :-

The non linear effects in optical fiber are large:-

The lasing line width of Fox smith resonator is:-

Self phase modulation causes modification to the pulse spectrum;-

The input impedance  of a transistor  is ;-