Explore topic-wise MCQs in Engineering.

To reduce the effects of noise resulting in erratic switching of output states of a comparator, you can use

Refer to the given figure. Determine the output voltage, V_OUT.

What is (are) the necessary component(s) for the design of a bounded comparator?

In a flash A/D converter, the priority encoder is used to

What circuit produces an output that approximates the area under the curve of an input function?

If an op-amp comparator has a gain of 100,000, an input difference of 0.2 mV above reference, and a supply of 12 V, the output will be

A comparator with a Schmitt trigger has

In a(n) ________, when the input voltage exceeds a specified reference voltage, the output changes state.

The parallel-resonant impedance of a crystal oscillator is ________.

In a Nyquist plot, as the frequency increases, the phase shift between input and output signals ________.

Operational amplifiers are never used as nonlinear devices.

In an op-amp comparator, when the input voltage exceeds a reference voltage, the voltage output changes state.

Refer to the given figure. What is the output voltage?

What type(s) of circuit(s) use comparators?

A good example of hysteresis is a(n)

Series-feedback connections tend to ________ the input resistance. Shunt feedback connections tend to ________ the input resistance.

In practice, A is made ________ and the system is started oscillating by amplifying noise voltage, which is always present.

Voltage feedback connections tend to ________ the output impedance. Current feedback connections tend to ________ the output impedance.

In the phase-shift oscillator, the operating frequency is determined by ________.

In the Barkhausen criterion, the loop gain A is equal to ________.

An op-amp integrator uses a capacitor as the feedback element.

An op-amp can be used as a comparator to determine when an input voltage exceeds a certain level.

The output voltage of a summing amplifier is proportional to the sum of the input voltages.

Line regulation is the percentage change in output voltage for a given change in input line current.

At the series-resonant frequency, the amount of positive feedback is ________.

In the phase-shift oscillator, the gain of the amplifier stage must be ________.

The series-resonant impedance of a crystal oscillator is ________.

Negative feedback results in ________.

What is the gain at the origin of the Nyquist plot?

Positive feedback results in ________.

The series 7900 ICs are ________.

A complete power supply has a ________.

If the value of the full-load voltage is the same as the no-load voltage, the voltage regulation calculated is ________.

The ________ the voltage regulation, the ________ the operation of the voltage supply circuit.

In a half-wave rectifier, the dc voltage level is ________ the ripple voltage level.

The ________ the diode conduction time, the ________ the amount of the charging current through the capacitor filter.

A basic voltage regulator consists largely of a reference source, an error detector, and a control device.

Switching regulators are not very efficient.

The input resistance at the base of a transistor is R_{IN DC}I_BR_E.

The charging and discharging of the capacitor filter take ________ of the period of the input voltage.

The frequency of the output voltage of a full-wave rectifier is ________ the frequency of its input voltage.

________ is a frequency-determining component in a unijunction oscillator.

A Schmitt trigger is

Refer to the given figure. This circuit is known as

The output of a Schmitt trigger is a

A pnp transistor requires the same bias polarities as the npn transistor.

The purpose of biasing is to establish a proper Q-point.

The base bias circuit is not beta-dependent.

In the Colpitts oscillator, the elements X₁ and X₂ are ________ and X₃ is a(n) ________.

In a Hartley oscillator, the elements X₁ and X₂ are ________ and X₃ is a(n) ________.