Related Questions

In an LC oscillator, the frequency of oscillator is ___________ L or C.
A Proportional to square of
B Directly proportional to
C Independent of the values of
D Inversely proportional to square root of
In a radio receiver, we generally use ___________ oscillator as a local oscillator
A Crystal
B Wien-bridge
C Phase-shift
D Hartley
একটি সরল দোলকের সুতার দৈর্ঘ্য 99 cm এবং এর দোলনকাল 2 sec হলে দোলক পিন্ডের ব্যাসার্ধ নির্ণয় কর। (The length of the string and period of oscillation of a simple oscillator are 99 cm and 2 sec, respectively. Find the radius of the oscillator.)
A 1.29 cm
B 7 mm
C 3.18 mm
D 0.28 cm
E 2.15 mm
A high-power microwave pulse of the order of megawatts can be generated by a
A Traveling-wave tube
B Magnetron
C Reflex klystron
D Gunn diode
What frequency range is used for TV transmission and low power microwave applications?
A Very Low Frequency : 3 kHz to 30 kHz
B Medium Frequency : 300 kHz to 3 MHz
C Ultra High Frequency : 300 MHz to 3000 MHz
D Super High Frequency : 3000 MHz to 30000 MHz
E None of the above
The first widely-used commercial form of Artificial Intelligence (Al) is being used in many popular products like microwave ovens, automobiles and plug in circuit boards for desktop PCs. It allows machines to handle vague information with a deftness that mimics human intuition. What is the name of this AI?
A Boolean logic
B Human logic
C Fuzzy logic
D Functional logic
E None of the above
What ferrite device can be used instead of duplexer of isolate microwave transmitter and receiver when both are connected to the same antenna?
A Isolator
B Magnetron
C Simplex
D Circulator
What frequency range is used for microwave communications, satellite and radar?
A Low Frequency : 30 kHz to 300 kHz
B Medium Frequency : 300 kHz to 3 MHz
C Super High Frequency : 3000 MHz to 30000 MHz
D Extremely High Frequency :30,000 MHz
E None of the above
Which of the following permits a microwave signal to travel in one direction with virtually no loss, but severely attenuates any signal attempting to travel in the reverse direction?
A Isolator
B Wave trap
C Tunnel diode
D Circulator
What allow microwave to pass in only one direction?
A RF emitter
B Capacitor
C Varactor-triac
D Ferrite emitter

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