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1) Which among the below mentioned implementation strategies is/are precise to obtain an AC equivalent circuit of MOSFET?
A. Replacement of all capacitors by open circuits B. Replacement of all capacitors by short circuits C. Setting of all DC voltages to zero D. Setting of all DC voltages to unity a. A & C b. B & C c. B & D d. A & D
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2) Which type of temperature dependent resistor exhibits a positive temperature coefficient of resistivity? a. Thermistor b. Sensistor c. Both a and b d. None of the above
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3) Which process plays a crucial role in devising the independency of operating point over the variations in temperature or transistor parameters? a. Bias stabilization b. Bias compensation c. Both a and b d. None of the above
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4) Which techniques is/are adopted for reducing the drift in the operating point especially when the loss of signal is intolerable? a. Bias stabilization b. Bias compensation c. Both a and b d. None of the above
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5) On which factor/s do/does the value of thermal resistance depend? a. Size of transistor b. Type of cooling system c. Type of heat transfer mechanism d. All of the above
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6) Consider the assertions given below.
A. Replacement of each coupling and bypass capacitors by a short circuit B. Replacement of transistor by its hybrid equivalent model for further analysis C. Replacement of DC voltage sources by a short circuit Which is the correct sequential order of steps to be carried out for analysis of a transistor amplifier circuit? a. A, B, C b. B, A, C c. A, C, B d. C, A, B
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7) Why is the Darlington configuration not suitable for more than two transistors? a. Because leakage current increases and voltage gain decreases with multiple number of transistors b. Because leakage current decreases and voltage gain increases with multiple number of transistors c. Because leakage current as well as voltage gain increases with multiple number of transistors d. Because leakage current as well as voltage gain decreases with multiple number of transistors
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8) Which among the below mentioned circuits resemble its behaviour similar to that of an amplifier in high frequency region, as the response decreases with an increase in frequency? a. Simple high pass circuit b. Simple low pass circuit c. Simple band pass circuit d. Simple band stop circuit
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9) Which among the following is not an advantage of RC coupled amplifiers? a. High fidelity b. No core distortion c. No impedance matching d. Wide frequency response
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10) What should be the value of unity gain frequency for a short circuit CE transistor with gain of 30 at 4MHz and cut-off frequency of about 100 kHz? a. 40 MHz b. 80 MHz c. 120 MHz d. 150 MHz
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