11. Delay line canceller :
(a) improves SNR
(b) rejects stationary clutter at zero frequency
(c) amplifies the echo
(d) is a frequency domain filter
12. PIN diode resembles :
(a) a lowloss capacitor
(b) a PN diode
(c) a tunnel diode
(d) a zener diode
13. ‘LIDAR’ menans :
(a) light direction and ranging
(b) light detection and ranging
(c) linear detection and ranging
(d) linear direction and ranging
14. ‘MST’ radar is used :
(a) to measure speed of automobile
(b) to find cloud base altitudes
(c) to map the ground
(d) for surface search
15. ‘SAR’ is used :
(a) in remote sensing
(b) for weather forecasting
(c) in fire control
(d) in missile control
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