68301. Assertion (A): In a push pull circuit each transistor stays in the active region for one half cycleReason (R): A push pull amplifier has low distortion
68302. In a bipolar transistor at room temperature if the emitter current is doubled the voltage across its base emitter junction
68303. The Servants of India Society(1905)was formed to train people to serve the country by:
68304. Negative feedback lowers the cut off frequency and increase the upper cut off frequency of amplifier.
68305. In a single-stage RC coupled common emitter amplifier, the phase shift at the lower 3 dB frequency is
68306. CE mode input V-I characteristic can be shown by a plot of
68307. n-channel MOS is
68308. Which of the following compensation method in amplifier can be used to reduce the bandwidth?
68309. A push pull amplifier balance out
68310. In a half wave rectifier, Vrms is
68311. If the thermal resistance of a transistor is lower it means
68312. A Darlington pair has β = 300. If RE = 1 kΩ and RL = 100 Ω, the input impedance at the base is approximately
68313. Barkhausen criterion is 1 + Avβ = 0.
68314. The voltage gain of which transistor configuration is less than unity?
68315. Linear transistor circuits always operate in
68316. Assertion (A): Manufacturer's quote h parameters of transistor Reason (R): h parameters of a transistor are easiest to measure
68317. The P-type substrate in a conventional pn Junction isolated integrated circuits should be connected to
68318. Wien bridge uses
68319. Which of the following is not necessarily the advantages of a push pull amplifier?
68320. Which of the following best represents the output impedance of an actual op-amp?
68321. In CE amplifier
68322. The approximate value of input impedance of a common emitter amplifier with emitter resistance Re is given by
68323. The collector voltage VC of the circuit shown in the given figure aside is approximately
68324. The symbol shown in figure represents a
68325. The phase angle of a lag circuit is
68326. Which of the following components is essential for a voltage multiplier circuit?
68327. Which of the following represents the equivalent circuit of a crystal for crystal oscillator?
68328. The transistor specification number 2N refers to
68329. Stability factor for S is given by for a fixed bias
68330. In figure, the function of resistor R is
68331. The phase angle of lead circuit is
68332. A generator with an internal resistance of 600 Ω drives an amplifier whose input resistance is 400 Ω. The generator's open circuit voltages is 1 mV; the amplifier develops 100mV across an 8kΩ load. The power gain is
68333. Who is popularly called’Vaikkom Hero’?
68334. The upper end of the d.c. load line is called the __________ point and the lower end is the __________ point.
68335. In figure output impedance of amplifier is
68336. In a good voltage amplifier, its input impedance
68337. A non-inverting voltage feedback amplifier is a
68338. A Colpitt's oscillator uses
68339. In every practical oscillator, the loop gain is slightly larger than unity and the amplitude of the oscillations is limited by the
68340. IF amplifiers for radio receivers are often tuned to
68341. In CE circuit the parameter f12 is very small.
68342. In which amplifier circuit is gate conductance negligible?
68343. In figure VCEQ for each transistor is
68344. Which of the following combinations has no phase inversion of the signal?
68345. Which of the following h parameters is an admittance?
68346. The linear transistor circuits always operate in the
68347. In the graphical analysis of CE amplifier circuit, the intersection of base current and dc load line is called
68348. In an amplifier circuit the emitter is at ac ground potential in a
68349. An ideal op-amp has
68350. A class B amplifier is biased just at cutoffhas a high theoretical efficiency of 78.5% because its quiescent current is lowis biased at midpoint of load line Of the above statements
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