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Write short notes on: 1) Phosphor characteristics 2) Liquid crystal display
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Mar 2, 2018
by
anonymous
Write short notes on:
1) Phosphor characteristics
2) Liquid crystal display
notes
phosphor
characteristics
liquid
crystal
display
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asked
Jan 7, 2018
by
anonymous
Liquid Crystal Display (LCD)
Liquid Crystal Display (LCD)
Last answer:
Liquid Crystal Display (LCD) LCD stands for Liquid Crystal Display. It is a flat panel electronic display device which uses light modulating properties of liquid crystal. ... pixel and passive pixel display do not consist of switch at each pixel.
liquid
crystal
display
lcd
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asked
Mar 9, 2018
by
anonymous
Write short notes on diode.
Write short notes on diode.
Last answer:
Diode is made from semiconductor material like silicon or germanium. Diode may use as rectifier which convert AC to DC. It is a electronic component. It is two terminal device, one is anode and second is ... in one direction. Diode is made from P-type and N-type material. Diode have a PN junction.
notes
diode
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asked
Mar 9, 2018
by
anonymous
Write short notes on Arduino.
Write short notes on Arduino.
Last answer:
Arduino: Arduino is a open source hardware and software. Arduino is a microcontroller. Since Arduino is open source it have many manufacturer. Arduino project was started in about year ... many sensors to the Arduino. Arduino board have microprocessor, crystal oscillator, 5V voltage regulator.
notes
arduino
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1
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asked
Dec 12, 2017
by
anonymous
write short notes on single phase system.
write short notes on single phase system.
Last answer:
A "phase" in an electrical system is often referred to as the waveform (may be voltage or the current) of the power supply. The waveform in an AC system is typically ... domestic household or commercial supplies and street lighting. Industrial supplies requires three phase electrical supply .
notes
single
phase
system
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asked
Nov 15, 2017
by
anonymous
write short notes on BH curve.
write short notes on BH curve.
Last answer:
The B-H curve is the relation between Flux density B in Wb/m2 (on Y Axis) and H in AT/m (on X axis) It is also known as magnetization characteristics. This curve particularly useful ... occurs. At point A' material gets magnetically saturated and the curve becomes flat (parallel to X axis)
bh
curve
notes
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asked
Oct 28, 2017
by
anonymous
write short notes on Low-pass filter.
write short notes on Low-pass filter.
Last answer:
low-pass filter (1) filter exhibiting frequency selective characteristic that allows low-frequency components of an input signal to pass from filter input to output unattenuated all high-frequency components are ... the bandwidth of the filter. A filter whose impulse response is a low-pass signal.
notes
low
pass
filter
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2
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asked
Oct 28, 2017
by
anonymous
write short notes on Linear motor.
write short notes on Linear motor.
Last answer:
Normal electrical motor produces rotatory motion same the linear motor produces linear motion. Linear motors have low efficiency. Linear motor can directly produce straight line motion linear motor do not required gears or crank shaft to produce linear motion.
notes
linear
motor
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asked
Aug 19, 2019
by
anonymous
crystal oscillator and its applications.
crystal oscillator and its applications.
Last answer:
Need: Any circuit that generates an alternating voltage is called an oscillator. To generate ac Voltage, it takes energy from the dc source. 1. In some applications voltages of low frequency are required where ... generate clock in digital systems. It is used as sweep circuits in TV and CRO.
crystal
oscillator
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2
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asked
Sep 5, 2018
by
anonymous
Draw the circuit diagram of crystal oscillator and explain its working.
Draw the circuit diagram of crystal oscillator and explain its working.
Last answer:
To excite a crystal for operation in the series-resonant mode it may be connected as a series element in a feedback path, the crystal impedance is the smallest and the amount of positive feedback is the largest. ... which is good. The resonant frequency is given as Fo = 1/( 2 π √LC )
circuit
diagram
crystal
oscillator
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1
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asked
Jun 18, 2018
by
anonymous
In a single crystal of an intrinsic semiconductor, the number of free carriers at the Fermi level at room
In a single crystal of an intrinsic semiconductor, the number of free carriers at the Fermi level at room temperature is: A) Half the total number of electrons in the crystal B) Zero C) Half the number of atoms in the crystal D) Half the number of free electrons in the crystal
Last answer:
In a single crystal of an intrinsic semiconductor, the number of free carriers at the Fermi level at room temperature is: Zero
single
crystal
intrinsic
semiconductor
carriers
fermi
level
room
temperature
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asked
Mar 10, 2018
by
anonymous
What is a crystal oscillator?
What is a crystal oscillator?
crystal
oscillator
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0
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asked
Jan 2
by
anonymous
Following are the different liquid propellants used in rocket engines
Following are the different liquid propellants used in rocket engines
Last answer:
Following are the different liquid propellants used in rocket engines 1. kerosene, Liquid oxygen and Liquid Hydrogen similar to kerosene 2. Alcohol and its derivatives (Ethyl Alcohol) 3. hydrazine and its derivatives 4. Hydrogen peroxide 5. liquid hydrogen
liquid
propellants
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asked
May 7, 2020
by
anonymous
State gaseous and liquid insulating material.
State gaseous and liquid insulating material.
Last answer:
i) Gaseous insulating material : 1. Air 2. Nitrogen 3. Hydrogen 4. SF6 ii) liquid insulating material: 1. Transformer oil 2. Capacitor oil 3. Cable oil 4. Pyranol 5. Savotal 6. Savol 7. Vegetable oil 8. Silicon liquids
state
gaseous
and
liquid
insulating
material
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asked
Sep 7, 2018
by
anonymous
Give examples of different types of fuels. Also state any two advantages of liquid fuels over solid fuels.
Give examples of different types of fuels. Also state any two advantages of liquid fuels over solid fuels.
Last answer:
Examples of different types of fuels:- 1. Indian Coal : It contain 30 to 40 % ash but sulphur content is less than 1%.. 2. Imported coal: It contents low ash about 10% but sulphur ... can be controlled to match the load requirements. 13. Rapid and efficient starting of the boilers from cold.
fuels
advantages
liquid
solid
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asked
Apr 30, 2018
by
anonymous
The material used in liquid fuses is
The material used in liquid fuses is (1) SF6 (3) carbon tetra chloride (2) distilled water (4) transformer oil
Last answer:
The material used in liquid fuses is carbon tetra chloride
material
used
liquid
fuses
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asked
Apr 26, 2018
by
anonymous
Liquid flow rate is measured using
Liquid flow rate is measured using (A) a pirani gauge (B) a pyrometer (C) an orifice plate (D) a bourdon tube
Last answer:
Liquid flow rate is measured using an orifice plate
liquid
flow
rate
measured
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asked
Jan 24, 2018
by
anonymous
Liquid Crystal Display (LCD) in embedded system
Last answer:
Liquid Crystal Display:-An LCD is a low-cost, low power device capable of displaying text and images. LCD's are extremely common in embedded systems since such system often does not have video monitors ... toggles the enables bit and acts as a delay so that the command can be processed and executed.
lcd
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1
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asked
Jul 30, 2019
by
anonymous
Write short notes on fire extinguishing methods adopted in electrical engineering.
Write short notes on fire extinguishing methods adopted in electrical engineering.
Last answer:
Stand 6 to 8 feet away from the fire and follow the four-step PASS procedure. If the fire does not begin to go out immediately, leave the area at once. Always be sure ... fire causing the particles to expand chemically inhibiting combustion and expelling the oxygen thereby smothering the flames.
fire
extinguishing
electrical
engineering
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3
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asked
Aug 11, 2018
by
anonymous
Write short notes on 3 phase AC system.
Write short notes on 3 phase AC system.
three
phase
ac
system
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107
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0
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asked
Nov 15, 2017
by
anonymous
write short notes on thyristor CSI .
write short notes on thyristor CSI .
Last answer:
Current-source inverter (CSI) is an inverter with a DC current input. Current source inverters are most commonly used in very high power AC motor drives.
thyristor
csi
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2
answers
asked
Mar 19, 2020
by
anonymous
KVL solved problem non linear load VI characteristics equation
Last answer:
https://youtu.be/fgQTs-1hq7Q
kvl
solved
problem
non
linear
load
vi
characteristics
equation
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1
answer
asked
Oct 19, 2019
by
anonymous
Diode VI characteristics
Diode VI characteristics
Last answer:
Diode VI characteristics
diode
vi
characteristics
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209
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1
answer
asked
Oct 13, 2019
by
anonymous
Draw symbol & V-I characteristics of (i) LASCR (ii) DIAC (iii) TRIAC
Draw symbol & V-I characteristics of (i) LASCR (ii) DIAC (iii) TRIAC
Last answer:
(i) LASCR: (ii) DIAC: (iii) TRIAC:
symbol
v-i
characteristics
lascr
diac
triac
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669
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1
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asked
Sep 2, 2019
by
anonymous
basic characteristics of sound signal.
basic characteristics of sound signal.
Last answer:
Level and loudness: The amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound, and a smaller amplitude means a softer sound. The loudness of a ... the reproducing system should be capable of handling the maximum and minimum power in the same ratio.
characteristics
sound
signal
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77
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1
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asked
Aug 4, 2019
by
anonymous
Compare characteristics of asynchronous and synchronous transmission mode.
Compare characteristics of asynchronous and synchronous transmission mode (four points).
Last answer:
Synchronous transmission Asynchronous transmission 1. Synchronous transmission are synchronized by an external clock. 1. Asynchronous transmission are synchronized by special signals along the transmission ... for transferring a small amount of data as it is simple and economical.
characteristics
asynchronous
synchronous
transmission
mode
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60
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1
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asked
Aug 2, 2019
by
anonymous
Explain the characteristics of solar cell.
Explain the characteristics of solar cell.
Last answer:
Characteristics of solar cell : Explanation :- Solar cells produce direct current ( DC ) electricity and current times voltage equals power, so we can create solar cell I-V curves representing ... system so that it can operate as close to its optimal peak power point (MPP) as possible.
characteristics
solar
cell
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85
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1
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asked
Jul 29, 2019
by
anonymous
State characteristics of force.
State characteristics of force.
Last answer:
i) Magnitude: The quantity of force e.g. 10 N, 100 kN etc. ii) Direction: It is the line along which the force acts. It is also called as line of action of the force. iii) Point of ... . Push: If the arrow head is pointed towards the point of application, the nature of the force is push.
characteristics
force
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62
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1
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asked
Jul 25, 2019
by
anonymous
Draw a symbol and neat labeling V-I characteristics of GTO and explain its operation.
Draw a symbol and neat labeling V-I characteristics of GTO and explain its operation.
Last answer:
Ans: Symbol and V-I characteristics of GTO: Operation of GTO: i) As the applied anode to cathode voltage is increased above zero, very small current (leakage current) flows through the device. ... low voltage (VBRR). The reverse breakdown voltage is of the order of 20 to 30 volt only.
v-i
characteristics
gto
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335
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1
answer
asked
Jul 25, 2019
by
anonymous
Draw a neat labelling V-I characteristics of SCR and explain the region
Draw a neat labelling V-I characteristics of SCR and explain the region
Last answer:
(i) Latching current: It is the minimum anode current required to maintain the SCR in the conduction state just after turn-on and the gate signal has been removed. (ii) Holding current: It is the minimum anode current required to hold the conducting SCR in the ON state.
scr
characteristics
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393
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2
answers
asked
Jun 29, 2019
by
anonymous
List three important characteristics of an electric circuit.
List three important characteristics of an electric circuit.
list
three
important
characteristics
of
an
electric
circuit
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211
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0
answers
asked
Jun 29, 2019
by
anonymous
What is the smallest unit of a compound with the same chemical characteristics?
What is the smallest unit of a compound with the same chemical characteristics?
Last answer:
The molecule is the smallest unit of a compound with the same chemical characteristics.
what
is
the
smallest
unit
of
a
compound
with
same
chemical
characteristics
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89
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1
answer
asked
May 8, 2018
by
anonymous
The following is/are the characteristics of SF6 circuit breakers:
The following is/are the characteristics of SF6 circuit breakers: (A) It does not need an auxiliary breaking chamber (B) Short break time of 2 to 2.5 cycles (C) All of the above (D) None of the above
Last answer:
The following is/are the characteristics of SF6 circuit breakers: (A) It does not need an auxiliary breaking chamber (B) Short break time of 2 to 2.5 cycles (C) All of the above (D) None of the above
characteristics
sf6
circuit
breakers
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81
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1
answer
asked
Apr 28, 2018
by
anonymous
The terminal characteristics of a dc generator suitable for electric welders is
The terminal characteristics of a dc generator suitable for electric welders is (A) separately excited generator (B) shunt generator (C) series generator (D) differentially compounded generator
Last answer:
The terminal characteristics of a dc generator suitable for electric welders is differentially compounded generator
terminal
characteristics
dc
generator
electric
welders
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86
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1
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asked
Apr 26, 2018
by
anonymous
Which of the following does not show non-linear V-I characteristics?
Which of the following does not show non-linear V-I characteristics? (A) Schottky diode (B) Tunnel diode (C) Thermistor, at a fixed temperature (D) p-n Junction diode.
Last answer:
Which of the following does not show non-linear V-I characteristics? (A) Schottky diode (B) Tunnel diode (C) Thermistor, at a fixed temperature (D) p-n Junction diode.
non-linear
v-i
characteristics
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103
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1
answer
asked
Mar 21, 2018
by
anonymous
The desirable static characteristics of a measuring system are?
Last answer:
The desirable static characteristics of a measuring system are accuracy, sensitivity and reproducibility.
desirable
static
characteristics
measuring
system
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313
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1
answer
asked
Mar 20, 2018
by
anonymous
The speed/load characteristics of a universal motor is same as that of?
Last answer:
The speed/load characteristics of a universal motor is same as that of D.C. series motor.
speed
load
characteristics
universal
motor
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69
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1
answer
asked
Mar 15, 2018
by
anonymous
What are the characteristics of a capacitor?
What are the characteristics of a capacitor?
characteristics
capacitor
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75
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0
answers
asked
Mar 10, 2018
by
anonymous
Explain the characteristics of inductor to be considered while designing it.
Explain the characteristics of inductor to be considered while designing it. What is the effect of over current and increase in temperature on inductor.
characteristics
inductor
designing
effect
current
temperature
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54
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0
answers
asked
Mar 10, 2018
by
anonymous
Explain the electrical characteristics of transformer.
Explain the electrical characteristics of transformer.
Last answer:
Transformer electrical characteristics: Area of primary and secondary conductors, Apri and Asec: Winding loss Pw: Flux density and core loss: Leakage inductance: ... transformer span. The rise in temperature may breakdown insulation which may cause failure of the transformer.
electrical
characteristics
transformer
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69
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1
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asked
Feb 5, 2018
by
anonymous
What are the desirable characteristics of ideal switch?
What are the desirable characteristics of ideal switch?
Last answer:
Desirable characteristics of the ideal switch: It is desirable to have power switches characteristics closer to ideal switch. The ideal switch should have the following characteristics. Zero resistance when ... . 100% efficiency. Able to control power flow with zero power dissipation.
desirable
characteristics
ideal
switch
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980
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1
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asked
Mar 2, 2018
by
anonymous
Write short note on ADC-Amplifier Interface.
Last answer:
ADC-Amplifier interface: In most data acquisition system analog to digital converter (ADC) is interfaced with the amplifier. There are different interface architectural schemes. Operational ... . The interaction between analog to digital converter and amplifier affects the system performance.
note
adc
amplifier
interface
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96
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1
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asked
Jan 24, 2018
by
anonymous
Short notes on timers and counters.
Last answer:
Timers:-A timer is a peripheral device that can measure time intervals. Timers can be used to1. General events at the specific time or to determine the duration of two external events.eg. Keeping a ... the number of times the car wheel rotates in one second, in order to determine cars speed.
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283
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1
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asked
Aug 8, 2017
by
anonymous
what is gate turn off thyristor (GTO)?
Draw the structural diagram of GTO. Explain briefly the switching behavior of GTO with the help of appropriate voltage and current waveform.
Last answer:
Gate Turn Off Thyristor (GTO) Conventional Thyristor can be turned on with gate terminal but can not turn off from gate terminal. But in case of Gate Turn Off Thyristor (GTO), we can turn it on and off ... subdivided as storage period (Ts), fall period (Tp) and tail period (Tt).
gto
gate
turn
off
thyristor
voltage
current
waveform
switching
characteristics
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1.6k
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1
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asked
May 15, 2018
by
anonymous
In a dual trace oscilloscope, the display appears segmented when
In a dual trace oscilloscope, the display appears segmented when (a) low frequency signals are observed in Alternate mode (b) low frequency signals are observed in Chop mode (c) high frequency signals are observed in Alternate mode (d) high frequency signals are observed in Chop mode
Last answer:
In a dual trace oscilloscope, the display appears segmented when high frequency signals are observed in Chop mode
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128
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1
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asked
Jun 29, 2020
by
anonymous
List fours characteristics of display and define them.
List fours characteristics of display and define them.
Last answer:
Characteristics of display: 1. Dot pitch: It is the distance between each group (t6riad) of red, blue and green phosphors. A smaller dot pitch helps produce sharper and clearer image 2. Resolution: ... time: Time taken by throughput of a pixel to fully react to a change in its brightness.
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asked
3 days
ago
by
anonymous
Write Unix command for following: i)create a folder OSY ii) create a file FIRST in OSY folder iii) List/display all files and directories. iv) Write command to clear the screen
Write Unix command for following: i)create a folder OSY ii) create a file FIRST in OSY folder iii) List/display all files and directories. iv) Write command to clear the screen
Last answer:
i) create a folder OSY: $mkdir OSY ii)create a file FIRST in OSY folder: $cd OSY $cat>FIRST or $ touch FIRST iii) List/display all files and directories: $ls iv) to clear screen: $clear
operating-system
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4
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asked
Jul 5, 2020
by
anonymous
Write a program to declare a class ‘book’ containing data members as ‘title’, ‘author-name’, ‘publication’, ‘price’. Accept and display the information for one object using pointer to that object.
Write a program to declare a class ‘book’ containing data members as ‘title’, ‘author-name’, ‘publication’, ‘price’. Accept and display the information for one object using pointer to that object.
Last answer:
#include<iostream.h> #include<conio.h> class book { char author_name[20]; char title[20]; char publication[20]; float price; public: void Accept(); void Display(); }; void ... title \t author_name \t publication \t price\n ; p-> Display(); getch(); }
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asked
Jan 8
by
anonymous
Write any four purposes of construction notes and any two purposes of north line.
Write any four purposes of construction notes and any two purposes of north line.
Last answer:
Purposes of Construction notes - 1) These include additional information about the structure which can not be shown in drawing. 2) These are useful for better understanding of drawing. 3) ... in drawing with common reference direction. 4) To avoid discrepancies in understanding of drawing.
building
planning
drawing
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1
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asked
5 days
ago
by
anonymous
Which of the following is not a part of a CRT ? (1) Phosphor screen (2) Shadow mask (3) Electron gun (4) Gas plasma
Which of the following is not a part of a CRT ? (1) Phosphor screen (2) Shadow mask (3) Electron gun (4) Gas plasma
Last answer:
Gas plasma
physics
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1
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asked
4 days
ago
by
anonymous
The substance which does not expand on going from liquid state to solid state is (1) Water (2) Cast-iron (3) Aluminium(4) Type metal
The substance which does not expand on going from liquid state to solid state is (1) Water (2) Cast-iron (3) Aluminium(4) Type metal
Last answer:
Type metal
chemistry
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