Explore topic-wise MCQs in Engineering.

The use of triggered sweep when using an oscilloscope provides more accuracy in which area?

The PUT (programmable unijunction transistor) is actually a type of:

A transducer's function is to:

The smallest amount of current that the cathode-anode can have, and still sustain conduction of an SCR is called the:

A UJT has:

Which test equipment best allows a comparison between input and output signals?

What is the difference between mnemonic codes and machine codes?

A microprocessor unit, a memory unit, and an input/output unit form a:

What type of register would shift a complete binary number in one bit at a time and shift all the stored bits out one bit at a time?

Synchronous counters eliminate the delay problems encountered with asynchronous (ripple) counters because the:

One of the major drawbacks to the use of asynchronous counters is that:

The determination of a digital signal's frequency and waveshape is best accomplished with which test equipment?

A logic probe is placed on the output of a gate and the display indicator is dim. A logic pulser is used on each of the input terminals, but the output indication does not change. What is wrong?

A +5 V PCB power source that has been "pulled down" to a +3.4 V level may be due to:

Measurement of pulse width should be taken at a 50% mean of the:

What does a hall effect sensor sense?

What causes the piezoelectric effect?

Which is the DIAC?

Intrinsic semiconductor material is characterized by a valence shell of how many electrons?

Ionization within a P-N junction causes a layer on each side of the barrier called the:

What is the most significant development in electronics since World War II?

What causes the depletion region?

What is an energy gap?

With full-wave rectification, current through the load resistor must be:

A characteristic curve is the result of a current versus voltage plot of diode activity, which begins at the:

When a diode is forward biased, the voltage across it

Why is heat produced in a diode?

The diode schematic arrow points to the:

When checking a diode, low resistance readings both ways indicate the diode is:

Electrons in the outermost orbit or shell of an atom are called

Shunting the ac component away from the load is the task of a:

What is the current through the zener diode?

A diode for which you can change the reverse bias, and thus vary the capacitance is called a

A filtered full-wave rectifier voltage has a smaller ripple than does a half-wave rectifier voltage for the same load resistance and capacitor values because:

Testing a good diode with an ohmmeter should indicate

The peak inverse voltage (PIV) across a nonconducting diode in a bridge rectifier equals approximately:

If an op-amp has one input grounded and the other input has a signal feed to it, then it is operating as what?

If the feedback/input resistor ratio of a feedback amplifier is 4.6 with 1.7 V applied to the noninverting input, what is the output voltage value?

In an open-loop op-amp circuit, whenever the inverting input ( ) is negative relative to the noninverting input (+), the output will:

What is the difference between common-mode and differential-mode input signals?

The common-mode voltage gain is

How many logic states does an S-R flip-flop have?

An output that is proportional to the addition of two or more inputs is from which type of amplifier?

In a PLL, to obtain lock, the signal frequency must:

An ideal amplifier should have:

The Schmitt trigger is a two-state device that is used for:

When a capacitor is used in place of a resistor in an op-amp network, its placement determines:

All of the following are basic op-amp input modes of operation EXCEPT

What is the output voltage?

How many leads does the TO-5 metal can package of an operational amplifier have?