|
A broadside array causes maximum energy to be radiated perpendicular to ___
|
|
0
|
149
|
March 20, 2022
|
|
Which of the following types of parabolic reflectors has ___
|
|
0
|
134
|
March 20, 2022
|
|
What is the function of the hemispherical shield of the parabolic reflector?
|
|
0
|
135
|
March 20, 2022
|
|
To convert diverging waves into parallel waves, where must ___com
|
|
0
|
132
|
March 20, 2022
|
|
If the slant range and altitude of a target are ___
|
|
0
|
140
|
March 20, 2022
|
|
An array of twelve dipoles are set in the same position as a ___
|
|
0
|
184
|
March 20, 2022
|
|
If the vertical beam width of a radar antenna is ___
|
|
0
|
139
|
March 20, 2022
|
|
Compared to omnidirectional antennas, directional antennas provide ___
|
|
0
|
172
|
March 20, 2022
|
|
To read range directly, the range step is placed in what position relative to an echo pulse?
|
|
0
|
111
|
March 20, 2022
|
|
Range-markers are produced on the basis of which of the following timing constants?
|
|
0
|
113
|
March 20, 2022
|
|
When used with a ppi presentation, a range gate must have ___
|
|
0
|
129
|
March 20, 2022
|
|
The range sweep in a range-gate generator is started at ___
|
|
0
|
115
|
March 20, 2022
|
|
On the screen of a ppi scope, range markers appear as ___
|
|
0
|
143
|
March 20, 2022
|
|
In a ppi scope that uses electromagnetic deflection, the amplitudes and ___
|
|
0
|
112
|
March 20, 2022
|
|
Because the electromagnetic crt uses magnetic deflection, the ___
|
|
0
|
120
|
March 20, 2022
|
|
Focusing is accomplished in an electromagnetic crt by ___
|
|
0
|
127
|
March 20, 2022
|
|
Electromagnetic deflection is preferred over electrostatic deflection in ___
|
|
0
|
137
|
March 20, 2022
|
|
Which of the following circuits produces currents that deflect the ___
|
|
0
|
135
|
March 20, 2022
|
|
Pulses used to synchronize the ppi with the transmitter are ___
|
|
0
|
133
|
March 20, 2022
|
|
Synchronization of events in ppi circuitry is of special importance for ___
|
|
0
|
106
|
March 20, 2022
|
|
Own ship position is at the center of the scope in which of the following radar displays?
|
|
0
|
120
|
March 20, 2022
|
|
The rhi scope provides the operator with information concerning the ___
|
|
0
|
108
|
March 20, 2022
|
|
The A-scope crt normally uses what type of sweep deflection?
|
|
0
|
118
|
March 20, 2022
|
|
To correctly represent the location of a target, a radar repeater must ___
|
|
0
|
109
|
March 20, 2022
|
|
Which of the following quantities determines total distance represented on ___
|
|
0
|
136
|
March 20, 2022
|
|
Of the following target parameters, which would most likely be ___
|
|
0
|
114
|
March 20, 2022
|
|
Which of the following geometrical quantities is/are used as coordinates for radar displays?
|
|
0
|
142
|
March 20, 2022
|
|
What channel in a monopulse receiver is used as the reference channel?
|
|
0
|
103
|
March 20, 2022
|
|
Why is it desirable that the duplexer quickly connect the receiver to ___
|
|
0
|
261
|
March 19, 2022
|
|
In a series-connected duplexer, what spark gap, if ___
|
|
0
|
192
|
March 19, 2022
|