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
The local oscillator of a broadcast receiver is tuned to a frequency higher than the incoming frequency
A To help the image frequency rejection
B To permit easier tracking
C Because otherwise an intermediate frequency could not be produced
D To allow adequate frequency coverage without switching
What is the local oscillator (mixer) frequency of the satellite with an uplink frequency in GHz band?
A 3500 MHz
B 4500 MHz
C 2225 MHz
D 2555 MHz
The crystal oscillator frequency is very stable due to ___________ of the crystal
A Rigidity
B Vibrations
C Low Q
D High Q
In a phase shift oscillator, the frequency determining elements are ___________
A L and C
B R, L and C
C R and C
D None of the above
In a Wien-bridge oscillator, if the resistances in the positive feedback circuit are decreased, the frequency ___________
A Remains the same
B Decreases
C Increases
D Insufficient data
In an LC oscillator, if the value of L is increased four times, the frequency of oscillations is ___________
A Increased 2 times
B Decreased 4 times
C Increased 4 times
D Decreased 2 times
The highest frequency which a conventional vacuum tube oscillator can generate is not limited by the
A Electron transit time
B Distributed lead inductance
C Inter-electrode capacitance
D Degree of emission from the cathode

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