ELECS TERMS FOR BOARDS

The process of storing the data in the stack is called _______ the stack.

pushing into

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

The output of the gate appears to be open.

The Static Induction Thyristor (SITH) is a:

3 terminal, self-controlled device

Which of the following circuits is commonly used to provide transient protection?

A clipper

Control sequence state is indicated by:

State box

A JFET cascade amplifier employs

1 common-gate and 1 common-source amplifier.

In VHDL, how are the statements between BEGIN and END evaluated?

Serially

A process is moved to wait queue when I/O request is made with ____________.

blocking I/O

What is the name of the device that allows four surveillance camera images to be viewed on a monitor at the same time?

A quad switcher

A change in frequency by a factor of ________ is equivalent to 1 octave.

2

A power supply with low output impedance has low:

Load regulation

What stage in which the CPU fetches the instructions from the instruction cache in superscalar organization?

Prefetch stage

Which of the following is NOT a major component of a sequential logic system.

XOR gates.

For a good, stabilized biasing of the transistor of the CE amplifier of figure. We should have:

R_E/R_B >> 1

The Q of a crystal is typically ______.

20,000

Which of the following axial-lead resistor types usually has a blue, light green or red body?

Metal-film resistors.

Which of the low-frequency cutoffs determined by C_S, C_C, or C_E will be the predominant factor in determining the low-frequency response for the complete system?

highest

Which one of the following is a method for designing finite state machines?

ASM block

What do you call the ratio of voltage transform at first port to the voltage transform at the second port?

Voltage transfer ratio

What would be the value of impedance of a parallel resonant circuit at antiresonance condition?

Resistive and maximum

Operation code field is present in:

machine language instruction

The effect of connecting an additional parallel load to an electrical supply source is to increase the:

current taken from the source

If all the poles of H(z) are outside the unit circle, then the system is said to be:

None of the choices

The drain current in JFET is controlled by:

Reverse-bias at the gate

Which of the following technology was used by Intel to design its first 8-bit microprocessor?

PMOS

Which microcontroller is used in Arduino Leonardo?

ATmega32u4

A ripple counter's speed is limited by the propagation delay of:

each flip-flop

Which of the following is an important feature of the sum-of-products form of expressions?

No signal must pass through more than two gates, not including inverters.

The threshold voltage of an n-channel MOSFET can be increased by:

Reducing the channel dopant concentration.

What equation represents the time varying electric field?

E = ▽V - A

Experimenter A uses a test charge-2q₀ to measure an electric field produced by stationary charges. A finds a field that is:

the same in both magnitude and direction as the field found by B

What is the unit step response of the system described by the difference equation?

y(n)=0.9y(n-1)-0.81y(n-2)+x(n) under the initial conditions y(-1)=y(-2)=0?

[1.099+1.088(0.9)ⁿ.cos((π/3)n−5.2°)]u(n)

Current stability of a CC amplifier can be increased by:

Increasing emitter resistance and decreasing base resistance

What do you call the ratio of voltage transform at the first port to the current transform at the second port?

Transfer impedance

The charging time constant of a circuit consisting of an inductor is the time taken for the voltage in the inductor to become __________ % of the initial voltage.

37

The behavior of ferromagnetic domains in an applied magnetic field gives rise to:

Hysteresis

The ________ directive instructs the assembler to begin memory allocation for a segment/block/code from the stated address.

ORG

Asynchronous circuits are useful in application where the input signals may:

Both change at any time and never change

Which of the following is known as the Maxwell's first equation in free space?

▽×H = D

A paramagnetic substance is placed in a weak magnetic field and its absolute temperature T is increased. As a result, its magnetization:

decreases in proportion to 1/T

What is the atomic radius of copper atom?

1.17 Angstroms

What is a small capacitance formed by twisting together two insulated wires?

Gimmick capacitance

What is the relation of the electrical resistivity of ferrites to metals?

Ferrites have resistivities typically 10⁶ times that of metals.

Which of the following does not contribute to the permanence of a magnet?

Grain growth

What do you call the maximum temperature measured on the resistor due to both internal heating and the ambient operating temperature?

Hot-spot temperature

Equalizing circuits are provided across each SCR in series operation to provide uniform _______.

voltage distribution

Which of the following thyristors are gate turned-off device?

I. Gate turned off thyristor

II. State Induction Thyristor

III. MOS-controlled thyristor

I and II only

Which of the following compounds would more likely serve as an intrinsic semiconductor?

InP

In a commutation circuit, employed to turn-off an SCR, satisfactory turn-of is obtained when:

circuit turn-off time > device turn-off time

Which resistor type is more voltage-sensitive than others?

Carbon composition

Consider the following:

1. Oscillator

2. Emitter follower

3. Cascaded amplifier

4. Power amplifier

Which of these use feedback amplifiers?

1 and 2

What happens to the internal resistance, r, of voltaic cell as the cell deteriorates?

It increases.

How many connecting terminals does an SPDT switch have?

3

The circuit area of round wire, doubles for:

every 3 gage sizes.

A resistor is an example of a/an:

both bilateral component and passive component.

Which of the following cells is not a primary cell?

Lead-acid

A power-line filter used to reduce rf interference is an example of a _______.

low-pass filter

A magnetic field exist between the plates of a capacitor:

while the capacitor is being charged

For round wire, as the gage numbers increases from 1 to 40:

the diameter and circular area decrease.

The soft iron core in the solenoid shown is removable. Then:

one must do work to remove the core

The magnetic properties of material stem chiefly from:

electron magnetic dipole moments

The resistance of the primary coil of a well-designed, 1: 10 step-down transformer is 1Ω. With the secondary circuit pen, the primary s connected to a 12 V ac generator. The primary current is:

essentially zero

Which of the following is not a jump instruction?

JB (jump back)

The polarity of an induced voltage is determined by

Lenz`s law.

DMA is particularly suited for data transfer between the ________.

disk drive and RAM

Degaussing is done with:

alternating current.

The ________ is an electromagnetic device that contains a coil rotating on a jeweled bearing mount.

d`Arsonval movement

The geographic North Pole of the earth has

south magnetic polarity

The purpose of Milliken's oil drop experiment was to determine:

the charge of an electron

Which of the following is not an arithmetic instruction?

ROL (rotate left)

A 2200-μF capacitor with a voltage rating of 35 Vis most likely a/an:

electrolytic capacitor.

In a conductor carrying a current we expect the electron drift speed to be:

much less than the average electron speed

Absolute instruments are those:

Which give the magnitude of the quantity under measurements in terms of the physical constants of the instruments.

A transistor can be destroyed in a circuit by:

excessive heat

What is the most important operation in binary-coded decimal (BCD) arithmetic?

Addition

The coil of a moving coil meter is wound on:

Aluminum frame

The reliability of a measuring instrument means:

Degree to which repeatability continues to remain within specified limits

Which of the following is not a weighted value positional numbering system?

binary-coded decimal

The carry propagation delay in 4-bit full-adder circuits:

is cumulative for each stage and limits the speed at which arithmetic operations are performed

To bias a transistor to cut-off, the base must be:

at the emitter potential

In which part of the scale does the pointer indicate most accurately:

In the last one-third of the scale

Four good electrical insulators are:

glass, air, plastic, porcelain

The current is zero in a conductor when no potential difference is applied because:

for every electron with a given velocity there is another with a velocity of equal magnitude and opposite direction.

A toroidal inductor is one in which the:

windings are wound on a closed ring of magnetic material

The emf of a battery is equal to its terminal potential difference:

only when there is no current in the battery

Why is a pull-up resistor needed for an open collector gate?

to provide the HIGH voltage

Displacement current exists wherever there is:

A changing electric field

The Pentium microprocessor has a data bus of ________.

64 bits

One important application for diodes is recovering information from transmitted signals. This is referred to as:

demodulation

A magnetic field parallel to the x axis with a magnitude that decreases with increasing x but does not change with y and z is impossible according to:

Gauss` law for magnetism

When a rotor convertor is started by means of a small auxiliary motor, the power same size will be:

slightly more than the value of friction and windage losses at rated speed

Which of the following magnetic materials has least value of (BH)_mav?

Carbon steel

Manganin is an alloy of:

Copper, manganese and nickel

The emitter of a transistor is generally doped the heaviest because it:

Has to dissipate maximum power

Instrumentation amplifiers are used primarily in:

high-noise environment

Typically, an instrumentation amplifier has an external resistor used for:

setting the voltage gain

The purpose of a 3-wire bridge is to eliminate:

the effects of wire resistance in an RTD circuit

Major parts of the current in an intrinsic semiconductor are due to:

Conduction-band electrons

The three parts of basic isolation amplifiers are connected by:

input, output and power

The main current crossing the collector current in a normally biased NPN- transistor is:

Drift current