66.

67.

69.

70.

74.

73.

One among the following is not an application of flip flops. Which is that 7
(ಗೆ) data storage (B) frequency division
© frequency conversion (D) multivibrator

For an n type semiconductor Fermi level lies :
(வ) just below the conduction band

(B) just above the valence band

(©) at the centre of the forbiclden band

(D) inside the valence band

An optical fiber conducts light but can’t guide a radio frequency signal because :
(2) Optical fiber cannot support EM radiation

(ष) Optical fiber supports EM radiation if and only if the radiation wavelength is much
smaller than fiber's core diameter

(€) Optical fibers cannot support frequencies lower than cut-off frequency
(D) RF signals are TEM signals

Companding is used [0 5

(வ) overcome degradation in §/N ratio
(ए) overcome aliasing

(C) overcome guantisation error

(D) increase data rate

Double spotting in radio receivers is due to:
(வ) low gain of IF amplifier (8) highIF
{€} poor local oscillator tracking (D) ष्ण selectivity of RF and IF sections

For a Herlzian dipole antenna the half power beamwidth in the E plane is :

(ಸ) 360° (18) 180° © 90* (D) 455
The dynamic range of an 8 bit ADC is :
(५) 256 48 (0) 482 8 (C) 722 68 (0) 808

Depth of anesthesia can be determined using :

(A) EEG (B) ECG
(C) EMG (0) None of the (A), (B) or (C)
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