You dont have javascript enabled! Please enable it! Electronics Engineering Coaching Materials: Section 5 Module 4

Electronics Engineering Coaching Materials: Section 5 Module 4

Electronics Coaching Materials: Section 5 Module 4

This is the Section 5 Module 4 of the compiled Electronics Coaching Materials taken from different sources including but not limited to Electronics books, past Board Exams Questions, Journals and other Electronics References. This particular Coaching Notes in Electronics Engineering has random Questions and Answers in random topics. Make sure to familiarize each questions to increase the chance of passing the ECE Board Exam.

Electronics Engineering Coaching: Section 5 Module 4

ยท Lead acid does not depend on:

Ans: Rate of charge

ยท Lead acid consists of:

Ans: Dilute sulfuric acid, sponge lead, and lead peroxide

ยท Conputer on a chip is called:

Ans: Transputer

ยท Transputer consists of

Ans: 32 bits

ยท Nibble consists of ____ bits.

Ans: 4

ยท OP amp has a gain of approximately

Ans: 1,000,000

ยท The voice coil has an impedance between

Ans: 4 and 100 ohms.

ยท Semiconductor have ____ bonds.

Ans: covalent

ยท Nimak gantry robot has

Ans: good precision positioning

ยท Sulphation in a lead acid cell is

Ans: to incompletely charging

ยท Nickel cadmium can be charged or discharged because

Ans: water is neither absorbed or formed.

ยท Daisy chaining

Ans: method used in determining interrupt priorities in a microcontroller.

ยท Who coined the term robot?

Ans: Karel Capek

ยท LASER is classified as

Ans: monochromatic. Coherent and collimator.

ยท 555 timer consists of

Ans: astable, monostable and VCO

ยท Early effect is also called

Ans: base width modulation

ยท The effect produced due to flow of electrons and holes

Ans: drift current

ยท Process of adding impurities in the intrinsic semiconductor

Ans: Doping

ยท What is reduced by using bundled conduction?

Ans: Power loss due to corona.

ยท ________ is also called modified Maxwell Wien bridge.

Ans: Anderson bridge.

ยท ________ is a bridge that compares the capacitance of the capacitor.

Ans: De Soutry bridge

ยท It measures unkonown inductance in terms of resistance and capacitance.

Ans: Anderson bridge

ยท An IC consists of passive devices.

Ans: Film IC

ยท SI unit of luminous intesnisty

Ans: Candela

ยท SI unit of illuminance

Ans: Lux

ยท A microwave diode that has a frequency range of 10-1000 GHZ

Ans: IMPATT diode

ยท A microwave diode in the negative resistance region.

Ans: PIN diode

ยท Schmitt trigger acts like a

Ans: Latch

ยท Fermi level is in the

Ans: Forbidden gap

ยท Invalid NAND flip-flop violation

Ans: S=0 C=0

ยท Invalid NOR flip-flop violation

Ans: S=1 C=1

ยท Range of depletion width

Ans: 0.5 and 1 um

ยท Impedance matching

Ans: Transformer coupling and emitter follower.

ยท Maxwell-Wien bridge measures

Ans: Inductance

ยท D flip-flop consists of

Ans: JK flip-flop, RS flip-flop and inverter

ยท Uses binary counters

Ans: D flip-flop

ยท Ideal CMRR

Ans: Infinity

ยท SCARA uses ____ operation

Ans: Assembly

ยท Gold doping has an advantage of

Ans: Reduced storage time.

ยท It is the time for the diode to be forward biased to off time

Ans: Reverse recovery time

ยท The reverse current doubles in every ___ ยฐC increase in temperature.

Ans: 6

ยท LASER and LED are in what spectrum?

Ans: Infrared spectrum.

ยท GaAs is used for

Ans: Infrared light or invisible light

ยท Tapped coil oscillator

Ans: Hartley

ยท Tickler coil oscillator

Ans: Armstrong

ยท Tapped capacitor oscillator

Ans: Colpitts

ยท The sediment that allows the bottom of the lead acid cell

Ans: Antimony Lead alloy

ยท Two transistors in class B is in

Ans: Push-pull

ยท Photodarlington consists of

Ans: Transistor and phototransistor

ยท Largest voltage applied without irreversible damage

Ans: PIV

ยท Thermal neutron is also called _____ neutron.

Ans: Slow

ยท Avalanche breakdown is due to

Ans: collision

ยท One nibble consists of

Ans: 4 bits

ยท Large computer has a maximum of

Ans: 64 bits

ยท Card readers can read about

Ans: 10.000 cards per minute

ยท Advantage of ECL

Ans: Lowest propagation delay

ยท Schottky TTL has

Ans: Least propagation delay

ยท Main advantage of CMOS

Ans: Low power

ยท CC voltage gain

Ans: cannot be exceeded to unity.

ยท Largest voltage applied without irreversible damage

Ans: PIV

ยท Transputer operates in

Ans: parallel data

ยท It is an IC consist of passive and active devices

Ans: Monolithic IC

ยท It is an IC consist of passive devices

Ans: Film

ยท Discrete circuit

Ans: Digital circuit

ยท Linear circuit

Ans: Analog circuit

ยท Backhausen criterion is a condition that

Ans: stops oscillating

ยท Negative output swing occurs

Ans: near saturation

ยท Positive output swing occurs

Ans: towards cut-off

ยท When dry cell is charged,

Ans: It increased in volume

ยท Class C acts

Ans: as an RF amplifier

ยท Crystal uses

Ans: RF transmitter

ยท A class of amplifier that has 85% efficiency

Ans: Class C

ยท With Si, Z=14, it is

Ans: Half-filled

ยท Formation of Si in valence shell

Ans: 2, 8, 4

ยท Volatile memory is

Ans: Semiconductor ROM

ยท Semiconductor ROM is

Ans: Combinational Logic circuit

ยท EPROM erases when strikes by

Ans: Ultraviolet rays

ยท Bolometer acts like a

Ans: Thermistor

ยท Ondograph is

Ans: A waveshape of voltage and current.

ยท Nickel iron cell consists of

Ans: NiOH, powdered iron and its oxide and 21% of potassium.

ยท CE is

Ans: Phase reversal

ยท Photoconductive cell is also called

Ans: photoresistive cell

ยท The smallest of all h parameter is

Ans: hO

ยท The formula of h11 is

Ans: V1/I1

ยท The h parameter consists of

Ans: Construction, operating point and temperature

ยท Moving coil occurs in

Ans: DC

ยท VTVM internal resistance is

Ans: the highest internal resistance

ยท It measures magnetic properties of ferromagnetic

Ans: Permeameter

ยท Simple RL low pass measures -12 dB/octave, corresponds to ___ dB/decade

Ans: -40

ยท Rotational joins of the robot is called _____

Ans: Revolute joints.

ยท Straight line joints movement of the robot is called

Ans: Prismatic joints

ยท Input and output point

Ans: Handshaking

ยท RL high pass filter has a phase difference of

Ans: 45 degrees

ยท Who invented the microprocessor in 1969?

Ans: Ted Hoff

ยท Who invented the 1st IC?

Ans: Jack Kilby

ยท dI/dt of an SCR is

Ans: local hot spot

ยท 3 ยฝ display maximum reading

Ans: 0999

ยท 3 ยฝ 1 mV reading

Ans: 1000

ยท Straight line method

Ans: piecewise linear method

ยท Improper biasing of IC

Ans: causes distortion

ยท One kWh of energy is equivalent to

Ans: 860 kcal

ยท Junction breakdown occurs in

Ans: reverse bias

ยท Ratio of Ah and Wh is

Ans: greater than one.

ยท The capacity in a cell is measured in

Ans: Ah

ยท In the IC, the SiO2 layer is

Ans: isolation

ยท A V/I characteristic curve is

Ans: Boltzman diode characteristic.

ยท Early effect is also called

Ans: base width narrowing.

ยท Advantage of Swinburneโ€™s test is

Ans: very convenient and very economical.

ยท An IC consists of ceramic substrate

Ans: thin film IC

ยท An IC consists of alumina substrate

Ans: thick film IC

ยท It is the development of a traverse electric field in a solid material when it carries an electric current

Ans: Hall effect

ยท It is used when the input signal has periodically occurring intervals in which the input waveform is quiescent

Ans: synchronized clamping

ยท A circuit that produces an output only when first activated by a preliminary pulse

Ans: sampling gate

ยท Successive trigerring signal induces a transition regardless of the state in which binary happens to be

Ans: symmetrical triggering

ยท Both carrier drift and carrier diffusion depend on ___

Ans: Einstein relation

ยท Microprogramming is

Ans: A technique to implement the control logic necessary to execute instructions within a processor.

ยท It is used to measure a speed by cutting off light at a regular interval

Ans: Stroboscope

ยท Thermal runaway is

Ans: is an electrochemical reaction that causes a battery to heat and possibly explode.

ยท A kind of ROM that degrades its own memory contents as the memory is read

Ans: EAROM

ยท An inductor operates at 400 Hz

Ans: Toroidal core

ยท An inductor operates at 95 MHz

Ans: Air core

ยท Data bus

Ans: It is data lines in a system bus.

ยท In converting intrinsic into N-type extrinsic semiconductor, which element cannot be used?

Ans: Indium

ยท Pin resistor has industrial heating in

Ans: Hairpin form

ยท Any solid object has ___ degrees of freedom

Ans: 6

ยท Flip-flop as a latch

Ans: S-C flip flop

ยท PIN diode

Ans: A microwave diode frequencies up to GHz range.

ยท Ip/Iv of a tunnel diode is used in

Ans: Computer application

ยท Noise figure of MMIC (Monolithic Microwave Integrated Circuit)

Ans: 3.5 to 6 dB

ยท Unique advantage feature of CMOS

Ans: Power in a nanowatt range

ยท Any charge in a battery when taken off the vehicle

Ans: Bench charge

ยท LASCR acts like a

Ans: Latch

ยท A word has

Ans: 16-bit length

ยท A double word has

Ans: 32-bit length

ยท A company who invented the word byte

Ans: IBM

ยท Degrees of freedom is the number of ______ independent movements including the end effector

Ans: independent

ยท An inductor operates at 400 Hz

Ans: Toroidal core

ยท Percentage loss of the dc wound machine

Ans: 1 %

ยท When dc voltage is removed, the clamper acts as a

Ans: Rectifier

ยท CMOS has extremely

Ans: Large packing density

ยท Solar cell has a principle of

Ans: Photovoltaic cell

ยท Sensor that detects change in resistance in extrinsic semiconductor

Ans: Spreading Resistance Sensor (SRS)

ยท Reduce the stray capacitance and capacitance between bridge arm by grounding

Ans: Wagner Grounding

ยท A meter sensitivity control in a test instrument

Ans: Linear Taper Potentiometer

ยท A volume control in a stereo compact disc player

Ans: Logarithmic Taper Potentiometer

ยท Faster in retrieval and storage compared to magnetic tape

Ans: Magnetic Disk

ยท It has more ripple in a bandpass and cut-off frequency

Ans: Chebyshev filter

ยท Darlington pair of transistors is _____ by Beta factor.

Ans: multiplied

ยท CCD has ___ transfer electrons

Ans: 6

ยท Neutral logic

Ans: Trinary logic

ยท Totally true, totally false

Ans: Fuzzy logic

ยท Which is not a factor of capacitance?

Ans: Plate thickness

ยท Ideal input impedance of an op-amp

Ans: Very high

ยท Ideal output impedance of an op-amp

Ans: Very low

ยท With 100 ฮฉ to match with higher input impedance, the configuration is

Ans: Common base

ยท Optocoupler consists of an

Ans: LED and phototransistor

ยท Optoisolator consists of an

Ans: LED and phototransistor

ยท Positive feedback

Ans: Oscillator

ยท Phase locked loop

Ans: Frequency discriminator, FM detector

ยท Air as inductor core has

Ans: Greatest efficiency

ยท What increases noise immunity in op-amp?

Ans: Hysteresis

ยท Resisitve element

Ans: Horizontal axis

ยท Reactive element

Ans: Vertical axis

ยท Sine wave with all harmonics

Ans: Square wave

ยท It abruptly changes from 2 voltage leads

Ans: Square wave

ยท 63.2 %

Ans: One time constant

ยท A sine wave oscillator, sine wave circuit

Ans: Crystal

ยท Positive pulse on anode terminal

Ans: Turning on an SCS

ยท 3 phase rectifier that uses 6 rectifier element

Ans: Gratz rectifier

ยท What uses as marker of 100 kHz?

Ans: 2 flip-flops

ยท Feature of R-S to J-K flip-flop

Ans: Toggle

ยท LC balance bridge

Ans: Maxwell bridge

ยท Operator on microwave frequency

Ans: GaAs over Silicon or Germanium

ยท J-K flip-flop frequency

Ans: Divides the frequency by 2.

ยท Small capacitance formed by twisting 2 insulated wire

Ans: Gimmick Capacitor

ยท Modified Miller circuit

Ans: Phanastron

ยท Converts step to ramp circuit

Ans: Miller circuit

ยท Servocontrolled robots are robots within ___ mm range rather than a fraction of mm.

Ans: 2

ยท It is an electron tube which emits photoelectrons when the cathode is eliminated

Ans: Phototube

ยท It is a radiant energy absorbed by the radiant to incident energy

Ans: Absorptance

ยท Inventor circuit

Ans: Converts dc to ac circuit

ยท Laurence or Living stone

Ans: Magnetic resonator or cyclotron

ยท Microporgramming

Ans: Sequence of five binary codes

ยท 540 degrees

Ans: Phase opposition

ยท Power efficiency of solar cell

Ans: 5% to 15%

ยท Thermal detector

Ans: Bolometer

ยท Exact location of data

Ans: Absolute code

ยท Fundamental frequency in all harmonics

Ans: Sawtooth wave

ยท dV/dt of SCR

Ans: False trigerring

ยท Monolithic IC uses

Ans: Extensive large components

ยท MOS IC uses

Ans: MOSFET

ยท A diode with no depletion region

Ans: Schottky diode

ยท LED emits light because

Ans: Electron and holes recombine

ยท What is the difference on the input impedance of BJT and FET?

Ans: A FET has high input impedance while BJT has low input impedance.

ยท Marking of scale to accept standard

Ans: Calibration

ยท Zener diode is in

Ans: reverse diode

ยท The temperature coefficient of extrinsic semiconductor is

Ans: negative

ยท Voltage of selenium semiconductor

Ans: 1 V

ยท It is preferred to manufacture diode and temperature rating

Ans: Silicon

ยท Isotope โ€ฆ

Ans: Abundance ratio

ยท Electron hole pair is done by

Ans: Thermal energy

ยท JFET square law device is because

Ans: its characteristic curve is parabolic

ยท Tank circuit

Ans: Antiresonant

Complete List of Electronics Engineering Coaching Materials

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