MCQs on Analog Electronics

Page 25 of 33. Go to page
01․ In an E only MOSFET, drain electric current starts only when VGS (th) is
positive.
negative.
zero.
greater than VGS (th).

Under construction.
02․ The transit time of the electric current carriers through the channel of a JFET decides it’s ________________ characteristics.
source.
drain.
gate.
source and drain.

Under construction.
03․ The opamp can amplify
AC signals only.
DC signals only.
both AC and DC signals.
neither AC not DC signals.

Under construction.
04․ In a nonlinear op-amp circuit, the
opamp never saturates.
feedback loop is never opened.
output shape is the same as the input shape.
opamp may saturate.

Under construction.
05․ The input signal for an instrumentation amplifier usually comes from
an inverting amplifier.
a resistor.
a differential amplifier.
a Wheatstone bridge.

Under construction.
06․ In a differential amplifier, the CMRR is limited mostly by the
CMRR of the opamp.
gain - bandwidth product.
supply voltages .
tolerance of the resistors.

Under construction.
07․ An instrumentation amplifier has a high
output impedance.
power gain.
CMMR.
supply voltage.

Under construction.
08․ The input offset electric current equals the
difference between the two base currents.
average of the two base currents.
collector electric current divided by the base current.
difference between the two base-emitter voltages.

Under construction.
09․ When the two input terminals of a differential amplifier are grounded
the base currents are equal.
the collector currents are equal.
an output error voltage usually exists.
the ac output voltage is zero.

Under construction.
10․ A common - mode signal is applied to
the non - inverting input.
the inverting input.
both inputs.
the top of the tail resistor.

Under construction.
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