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MCQs

Analog Electronics

Total Questions : 482 | Page 43 of 49 pages
Question 421. The base-emitter voltage of the second approximation is
  1.     0 V.
  2.      0.7 V.
  3.     0.3 V.
  4.     1 V.
 Discuss Question
Answer: Option B. ->   0.7 V.
Question 422. When the base resistor increases, the collector voltage will probably
  1.      increase.
  2.     stay the same.
  3.    All of these
  4.     decrease.
 Discuss Question
Answer: Option A. ->   increase.
Question 423. Ignoring the bulk resistance of the collector diode, the collector-emitter saturation voltage is
  1.     supply voltage.
  2.     a few tenths of a volt.
  3.     1 V.
  4.      0.
 Discuss Question
Answer: Option D. ->   0.
Question 424. If the base resistor is very small, the transistor will operate in the
  1.      saturation region.
  2.     cutoff region.
  3.    All of these
  4.     active region.
 Discuss Question
Answer: Option A. ->   saturation region.
Question 425. Three difference Q points are shown on a load line. The upper Q point represents the
  1.      maximum current gain.
  2.     intermediate current gain.
  3.     cutoff point.
  4.     minimum current gain.
 Discuss Question
Answer: Option A. ->   maximum current gain.
Question 426. If a transistor operates at the middle of the load line, a decrease in the current gain will move the Q point
  1.     up.
  2.     nowhere.
  3.     off the load line.
  4.      down.
 Discuss Question
Answer: Option D. ->   down.
Question 427. If the base supply voltage increase, the Q point moves
  1.     off the load line.
  2.     down.
  3.      up.
  4.     nowhere.
 Discuss Question
Answer: Option C. ->   up.
Question 428. Suppose the base resistor is open. The Q point will be
  1.     in the middle of the load line.
  2.      at the lower end of the load line.
  3.     off the load line.
  4.     at the upper end of the load line.
 Discuss Question
Answer: Option B. ->   at the lower end of the load line.
Question 429. If a transistor operates at the middle of the load line, a decrease in the base resistance will move the Q point
  1.     off the load line.
  2.      up.
  3.     nowhere.
  4.     down.
 Discuss Question
Answer: Option B. ->   up.
Question 430. If the base supply voltage is disconnected, the collector-emitter voltage will equal
  1.     0 V.
  2.     6 V.
  3.      collector supply voltage.
  4.     10.5 V.
 Discuss Question
Answer: Option C. ->   collector supply voltage.

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