Related Questions

A thin layer of dirt and grime coverts the reflecting surface of the parabolic dish of a radar set. The particular effect on the performance of the radar will be
A A decrease in range
B A reduction in horizontal resolution
C No noticeable effect
D A decrease in gain
The maximum usable range of the usual radar set (on any particular range setting) is determined by
A The width of the transmitted pulses
B The interval between transmitted pulses
C The bandwidth of the receiver IF stages
D The duty cycle
When it is desired that short-range targets be clearly seen on a pulsed-radar set, it is important that the receiver and display system have
A A long time constant
B Low-pass filters
C The shortest possible time
D The restricted high-frequency response
The minimum duration of pulse in a pulse triggering system for thyristors should be at least
A 10μs
B 30ms
C 10ms
D 1s
Power amplifiers handle ___________ signals compare to voltage amplifiers
A Small
B Very small
C Large
D None of the above
In a radar-set receiver, the usual mixer stage is
A And FET
B A tunnel diode
C A silicon crystal
D A Rochelle salts crystal
Four defensive football players are chasing the opposing wide receiver, who has the ball. Calvin is directly behind the ball carrier. Jenkins and Burton are side by side behind Calvin. Zeller is behind Jenkins and Burton. Calvin tries for the tackle but misses and falls. Burton trips. Which defensive player tackles the receiver?
A Burton
B Zeller
C Jenkins
D Calvin
Based on the information below, how much did a certain telephone call cost? 1. The call lasted 1 minute 27 seconds 2. The cost for the first 30 second unit is Tk. 1.80, call duration more than 30 seconds costs Tk. 0.90 per 30 second unit 3. Any call duration less than 30 seconds is rounded up to the nearest 30-second unit.
A Tk. 1.80
B Tk. 2.61
C Tk. 2.70
D Tk. 3.51
Class AB operation is often used in power large signal) amplifiers in order to
A Get maximum efficiency
B Remove even harmonics
C Overcome a crossover distortion
D Reducing collector dissipation
একটি চ্যানেল দিয়ে প্রতি সেকেন্ডে সর্বোচ্চ 106 বিট ডেটা ট্রান্সফার হলে ঐ চ্যানেলে ব্যান্ডউইথ কত হবে? (If 106 bits data are transmitted at most per second through a channel, then what will be bandwidth of that channel?)
A 1MBps
B 1Mbps
C 10KBps
D 10Kbps

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