1) TTL-IC uses Report

Field effect transistor

(i) with both P & N channel input

bipolar transistors as its primary elements

2) CMOS-IC operates Report

At +5V as logic 1

Over a wide range of input voltage between +3 & +18V

A tolerance of +-5% in volts is accepted

3) Most IC requires that each input be connected to either binary 1 or 0, otherwise Report

CMOS devices will automatically assume binary 1 if input is open

TTL will automatically assume binary 1 if its input is open

Both (i) & (ii) are correct.

4) A full adder consists of Report

2 And & 2 EX OR gates

2 inverter

(i) & one OR gate

5) A full adder is a combination of one OR gate and Report

2 half adders

4 half adders

3 half adders

6) Each full adder is capable of adding Report

Only two binary digit

(i) & a carried digit

only three number

7) MTC for digital clock circuit Report

Crystal is normally used to control the pulse time to logic circuit

(i) is used to produce a consistent binary 1 & 0 waveform

all above are correct

8) EAROM is electronically alterable Report

ROM

RAM

all above are correct

9) In serial data transmission Report

Mux is used to convert serial data into parallel

Only one binary digit at a time is transmitted

A large no. of pairs of wire is required

10) ARINC stands for Report

Airlines Radio corporation

Aviation radio incorporation

Aeronautical Radio incorporation

11) In ARINC 429, each word consist of Report

28 bits

32 bits

36 bits

12) The higher the frequency, the greater the effect of- Report

Stray capacitance & inductance

Signal transit time

All the above

13) As the A/C flies through the atmosphere, it picks up electrical charge due to Report

Frictional contact with atmospheric particles

Electrostatic induction

ATA

14) Pick-up is the term used when the interfering source is Report

DC power

AC power

Static noise

15) Pick-up interference can be Report

Capacitve only

Inductive only

Capacitive pickup & inductive pickup

16) What is correct cross talk interference Report

It is from a nearby signal-carrying cable

It arises out of capacitance between two cables

All the above are correct

17) At high frequencies, the skin effect confines the magnetic field of co-axial cable to Report

Their exterior

Their interior

The upper surface

18) Most signal-carrying cables are Report

Screened only

Twisted only

Screened & twisted

19) If both ends of the screen are earthed Report

It must be avoided

An earth loop is formed

All above are correct.

20) Suitable designed potential divider network is used to Report

Achieve maximum audio gain

Minimize conducted cross-talk

Non of the above

EASA Questions Radio Nav. Set 1

Set 1

Set 2

Set 3

Set 4

Set 5

Set 6

Set 7