335

34.

35.

36.

37.

38.

39,

40,

Aboul the realization of LTI systems, which among the following statement is most
appropriate ;

(ಸ) IR systems can be implemented recursively only

18) FIR systems can be implemented recursively വ non-recursively
(2 both (A) and (B) are correct

(D) 1R systems can be implemented recursively or non-recursively

For efficient computation of 16 point DFT
(ಸಿ) radix 2 FFT algorithm is used

(0) direct computation FFT is used

(©) radix 2 DIT FFT algorithm is used
(D) radix 4 FFT algorithm is used

When the phase characteristic of a filter is linear within its pass band, the group delay of the
filter will be :

(^) 2௭௦ (ಗ) constant (C) linear (D) non linear

An analog signal is band limited to 4 kHz, sampled at Nyquist rate and the samples are
quantised into4 levels. The quantised levels are assumed to be independent and equiprobable.
If we transmit two quantized samples per second, the information ‏قا عاد‎
bits/second.

(^) 1 8 2 (6) 4 (1) 3

A transmission line വ്‌ characleristic impedance 50 € is terminated by a 50 £) load when
excited by a sinusoidal voltage source at 10 GHz, the phase difference between two points
spaced 2 mm apart on the line is found ‏عط ما‎ മിട. The phase velocity of the wave
along the line is :

(ಗಿ) 08x10% m/s (8) 12x10° m/s

(©) 3x108 m/s (D) 1.6x10% m/s

The intrinsic impedance 01 11೧೯ 50200 ೫;
കു 80 9) 370 © 730 (0) 120೧

During night which layer does not exist :
(ಗಿ) D layer (8) ‏يما نا‎ (ಲ) உளள (D) Elayer

Radiation resistance of A/2 dipole is :
(ക) 377 ¢ (8) 750 (೧ 730 (D) 120೧

7 155/2014
(7.7.0.