Chapter 2 · MCQ Read Mode

Fundamentals of Electronic Devices and Circuits

Doping silicon with phosphorus produces:

The majority charge carriers in a P-type material are:

The typical forward voltage drop of a germanium diode is about:

A bridge rectifier uses how many diodes?

The efficiency of a full-wave rectifier is approximately:

A Zener diode is normally operated in:

In a BJT, the relationship between emitter, base and collector currents is:

Which BJT configuration provides the highest power gain and is most commonly used?

The common collector configuration is also known as the:

Voltage-divider bias is preferred in BJT circuits mainly because it:

A FET is a:

The three terminals of a FET are:

In a JFET, increasing the reverse gate bias V_GS:

The drain current at V_GS = 0 in a JFET is called:

An E-MOSFET (enhancement type) conducts only when:

A D-MOSFET (depletion type) already has a conducting channel present at:

The MOSFET gate is separated from the channel by:

Because of its insulated gate, a MOSFET has:

As a switch, a MOSFET operates between cutoff and the:

CMOS logic consumes very low static power mainly because:

Voltage gain in decibels is calculated as:

In a CE amplifier stage, the output voltage is:

Negative feedback in an amplifier:

A Class B power amplifier conducts for:

Crossover distortion is a characteristic problem of which amplifier class?

Class C amplifiers are mainly used in:

The Barkhausen criterion for sustained oscillation requires the loop gain to be:

A Hartley oscillator uses a tapped:

Which oscillator provides the best frequency stability?

An oscillator essentially converts:

An op-amp is fundamentally a:

An ideal op-amp has an open-loop gain that is:

An ideal op-amp has an input impedance that is:

The “virtual short” concept means that, with negative feedback:

The voltage gain of an inverting amplifier is given by:

The voltage gain of a non-inverting amplifier is always:

A voltage follower (buffer) has a voltage gain of:

An op-amp integrator produces an output proportional to the:

An op-amp comparator output:

CMRR of an op-amp indicates its ability to:

A logarithmic amplifier produces an output proportional to the:

A log amplifier is typically built by placing a diode/BJT in the op-amp’s:

A logarithmic multiplier works on the principle that:

The three main blocks of a PLL are:

A voltage-to-frequency converter produces:

Compared with passive filters, active filters can additionally provide:

Active filters avoid the use of bulky:

The cutoff frequency of a simple first-order active RC filter is given by:

A first-order active low-pass filter passes frequencies:

A first-order active high-pass filter passes frequencies:

The correct historical evolution of bipolar logic families is:

RTL stands for:

The maximum number of similar gate inputs that one gate output can drive is called:

The time taken for a gate’s output to respond to a change at its input is called:

Noise margin represents the maximum noise voltage that can be tolerated:

A lower speed-power product indicates:

In DTL (Diode-Transistor Logic), the logic (AND/OR) function is performed mainly by:

TTL logic gates typically use a distinctive:

Bipolar logic families include all of the following EXCEPT:

Modern digital ICs predominantly use CMOS technology mainly because of its:

How many NOT gates are required to build a 2:1 Multiplexer?

How many 2-input NAND gates are contained in a standard 7400 TTL IC?

In TTL logic, what is the input voltage range for a logic LOW (active LOW level)?

When an invalid BCD code (1010–1111) is detected and auto-corrected, what value is added?

What is the terminal (reset) state of a MOD-10 (decade) counter?

What is the minimum number of flip-flops (memory blocks) required to build a MOD-6 ripple counter?

An SR flip-flop is also called a:

A JK flip-flop with J = 1 and K = 1 is clocked at 20 kHz. What is the output waveform and its frequency?

What is the duty cycle of an ideal astable multivibrator?

Which of the following is NOT a valid operation of flip-flops?

The TRAP interrupt in 8085 microprocessor is:

Small-Scale Integration (SSI) refers to ICs with how many transistors?

In VHDL, a signal that represents a bus (multi-bit connection) is declared as:

In VHDL, the primary design unit that represents a hardware block's interface (ports and generics) is called:

The shadow mask technique is used in:

Left-shifting an unsigned binary number by 1 bit is equivalent to:

The expression x << 3 is equivalent to:

Which logic gate is commonly used for parity checking and overflow detection?