Basic Radars – 1 – 1

1. Radar is :

(a) a mechanical device
(b) an electromagnetic device
(c) a pneumatic device
(d) an electrical device

ANSWER

EXPLANATION

2. Duplexer isolates :

(a) transmitter while transmitting
(b) receiver while receiving
(c) receiver while transmitting
(d) display unit

ANSWER

EXPLANATION

3. Receiver power depends on :

(a) medium losses
(b) medium, transmitter and polarization losses
(c) transmitter losses
(d) polarization losses

ANSWER

EXPLANATION

4. Duplexer is called :

(a) a switch
(b) coupler
(c) TR switch
(d) amplifier

ANSWER

EXPLANATION

5. In search radars :

(a) the beam is scanned continuously
(b) the beam is not scanned continuously
(c) angular position cannot better
(d) three antennas must be used

ANSWER

EXPLANATION

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