Analog Electronics - Study Mode
[#241] If the inverting input terminal of an operational amplifier is grounded and a sinusoidal voltage waveform is applied at the non-inverting input terminal, the output will be:
Correct Answer
(A) Square wave
[#242] In order to increase the bandwidth of tuned amplifiers, one can use: 1. Tuned circuit with inductance having high Q factor 2. Double tuned amplifier with two tuned circuits coupled by mutual inductance 3. Staggered tuned amplifiers in which different tuned circuits which are cascaded are tuned to slightly different frequencies
Correct Answer
(C) 2 and 3 only
[#243] All transistor in the N output current mirror in the figure are matched with a finite gain β and early voltage V A = ∞. The expression for load current is
Correct Answer
(A) $$frac{{{{ ext{I}}_{{ ext{ref}}}}}}{{left( {1 + frac{{left( {1 + { ext{N}}}
ight)}}{{x08eta left( {x08eta + 1}
ight)}}}
ight)}}$$
[#244] For an n-channel MOSFET, if condention parameter (k n ) is 0.249 mA/V 2 , gate to source voltage V GS is 2V IN where V IN = 0.75 V. The current will be
Correct Answer
(C) 0.140 mA
[#245] The encapsulation of transistor is necessary for
Correct Answer
(D) Mechanical ruggedness