Last Answer : Optical lithography method that uses light to print a pattern in a photosensitive material is also called photolithography.
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104 views
2 answers
asked
Sep 24, 2017
by
anonymous
Last Answer : VLSI is small and consume less power and its designing is easy.
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82 views
1 answer
asked
Sep 24, 2017
by
anonymous
Phantom loading for testing of energy meter is used (A) to isolate the current and potential circuits (B) to increase power loss during testing (C) for meters having low current ratings (D) to test meters having a large current rating for which loads may not be available
Last Answer : B
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1.6k views
2 answers
asked
Apr 28, 2018
by
anonymous
.tef file is input file for floorplan
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625 views
0 answers
Why do we use VLSI?
Last Answer : VLSI is Very Large Scale Integration. VLSI is very useful for compact design. More functionalities in smaller size. VLSI IC have small power consumption as compared to discrete components circuit. VLSI can be use for different functions in compact size.
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150 views
1 answer
asked
Mar 11, 2018
by
anonymous
What is VLSI logic design?
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84 views
0 answers
asked
Mar 11, 2018
by
anonymous
why vlsi is important in modern days ?
Last Answer : Because the use of VLSI is increasing in modern days. Technology is getting advanced day by day. More and more features are adding in small chips.
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419 views
1 answer
asked
Aug 22, 2017
by
anonymous
Would this gauss meter be any good?
Last Answer : answer:Oooo!!! Did you get the Chony? Made in Mississigua Ont? I have one of those and love it. I cannot tell about the gauss meter. TI could be anything. Sorry. The Chony on the other hand is fantastic.
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1 view
1 answer
asked
Feb 28
by
anonymous
What is meter rule
Last Answer : It is a one meter long graduated stick. It is used to measure the length of an object or distance between two points. A meter rule is divided into 100 equal parts, each part is equal to one centi meter.
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9 views
1 answer
Draw venture meter and write steps to measure flow rate.
Last Answer : Venturi meter consists of three sections that is converging section, throat section and diverging section. The flow is introduced to the meter through the inlet with diameter D' . The inclined angle ... to 15o . Flow rate is proportional to the square root of the differential pressure.
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89 views
1 answer
asked
Jun 26, 2020
by
anonymous
List variable flow meter.
Last Answer : 1. Variable area : Rotameter 2. Variable head : a) Venturi b) Orifice c) Pitot tube d) Nozzle
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47 views
1 answer
asked
Jun 26, 2020
by
anonymous
working of distortion factor meter with block diagram
Last Answer : Working : Initially the switch S is kept at position 1.The attenuator gets excluded and the bridge T network is adjusted for full suppression of fundamental frequency and hence we get ... is obtained on the meter.Thus the total rms distortion is indicated by the reading of attenuator.
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879 views
1 answer
asked
Aug 21, 2019
by
anonymous
Principal of digital frequency meter.
Last Answer : The basic block diagram of basic digital frequency meter (DFM) is shown in above figure. The signal whose frequency we have to be measured is first to be amplified through amplifier. The output of amplifier ... = Number of counts. t = Time interval between start and stop condition of the gate.
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182 views
2 answers
asked
Aug 21, 2019
by
anonymous
State one application of clip on meter.
Last Answer : Clip-on meter is used to measure the High value AC current without breaking the circuit Or without opening the circuit.
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51 views
1 answer
asked
Aug 17, 2019
by
anonymous
State advantages & disadvantages of electromagnetic flow meter.
Last Answer : Advantage: Provides wide linear range. 2) Ability to measure reverses flow. 3) Gives rapid response to flow changes. 4) No obstruction is created to flow. 5) It can handle corrosive as ... and pipe networks with relatively short inside diameters. 3) It is useful for electrically conducting fluid.
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78 views
1 answer
asked
Aug 5, 2019
by
anonymous
Compare variable head flow meter with variable area flow meter.
Last Answer : Parameter Variable head flowmeter Variable area flowmeter Working principle Restriction or obstacle is placed in the path of flow to create a differential Pressure. The pressure ... viscous fluid slurries and dirty fluids. In laboratories and testing and production lines.
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318 views
1 answer
asked
Aug 5, 2019
by
anonymous
Explain the “mitigation of power theft” and “faulty meter replacement” for energy conservation techniques to reduce commercial losses.
Last Answer : Energy conservation techniques to reduce commercial losses: 1. Mitigation of Power Theft: Power theft being the most important issue which all of the service providing utilities ... agricultural sector. Prepaid meters may prove effective measures against unauthorized abstraction of energy.
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121 views
1 answer
asked
Sep 22, 2018
by
anonymous
Describe principle of operation of Doppler type ultrasonic flow meter with diagram.
Last Answer : Diagram: Working: The flow meter consists of a crystal transducer mounted outside the pipe in which flow is to be measured. This transducer is a piezoelectric crystal which ... , so the frequency of the reflected wave is shifted to particle velocity, according to Doppler principle.
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169 views
1 answer
asked
Sep 8, 2018
by
anonymous
Draw the diagram and explain the working of ferrodynamic type frequency meter.
Last Answer : Ferrodynamic type frequency meter: (Electrical resonance type frequency meter): It consists of a fixed coil. The supply whose frequency is to be measured is connected across it. This coil ... so selected that the moving coil takes up a convenient position when frequency is of normal value.
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6.4k views
1 answer
asked
Sep 6, 2018
by
anonymous
Draw a block diagram of electronic energy meter. Write function of each block.
Last Answer : Electronic Energymeter Functions of components/blocks: - CT reduces current to reasonable value for current scaling network. - Voltage & current scaling networks reduce proportionally the voltage ... ADC converts the square wave frequency analog output to display the energy in watthour.
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267 views
1 answer
asked
Sep 6, 2018
by
anonymous
State the function and shape of following parts used in induction type energy meter: i) Series magnet ii) Shunt magnet iii) Al disc iv) Brake magnet
Last Answer : i) Series magnet: produce flux proportional to current (load current) of circuit and interact in the aluminum disc with flux produced by voltage magnet for torque production. Its shape is like letter U. ii) ... : brakes the motion of the aluminum disc or slows it down. Its shape is like letter C.
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182 views
1 answer
asked
Sep 6, 2018
by
anonymous
With a neat sketch explain working of 1 phase dynamometer type power factor meter.
Last Answer : Working of 1 phase dynamometer type power factor meter : The current coil is connected in series with load. Two pressure coils marked as A and B are connected across the supply terminals ... becomes stationary and the pointer shows steady deflection corresponding to the power factor of the load.
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201 views
1 answer
asked
Sep 6, 2018
by
anonymous
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Write the working of L-C-R meter with suitable sketch.
Last Answer : LCR meter: A LCR meter (Inductance L, Capacitance C, and Resistance R) test equipment used to measure the inductance, capacitance and, resistance of a component. It works on the principle ... relative change in magnitude of the repetitive variations of the voltage and current known as amplitudes.
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79 views
1 answer
asked
Sep 6, 2018
by
anonymous
State the meaning of creeping error in 1 phase energy meter.
Last Answer : Creeping error: It is defined as the slow and continuous rotation of the disc of the energy-meter when only pressure coil is energized with no current in the current coil (load current = 0). ... magnet on this iron wire is sufficient to prevent continues rotation of the disc on no load condition.
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303 views
2 answers
asked
Sep 6, 2018
by
anonymous
State the use of shunt and series resistance used in extension of meter.
Last Answer : Use of shunt and series resistance: i) Use of shunt: To extend the range of Ammeter. ii) Use of series resistance: To extend the range of Voltmeter.
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88 views
1 answer
asked
Sep 6, 2018
by
anonymous
Draw a neat sketch of 1-ph induction type energy meter and write operating principle of it.
Last Answer : Operating Principal:- The disc is placed between the two-flux due to pressure coil and flux due to current coil, which will set up torque on the disc which is proportional to power causing the ... is proportional to voltage, the second carries a current coil so its flux is proportional to current.
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166 views
1 answer
asked
Sep 6, 2018
by
anonymous
Draw and describe working of electronic energy meter.
Last Answer : working of electronic energy meter:- 1. CT reduces current to reasonable value for current scaling network. 2. Voltage & current scaling networks reduce proportionally the voltage & ... The ADC converts the square wave frequency analog output to display the energy in watthour.
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133 views
1 answer
asked
Sep 6, 2018
by
anonymous
Describe with working of LCR meter for measurement of inductance.
Last Answer : working of LCR:- A LCR meter (Inductance (L), Capacitance (C), and Resistance (R) test equipment used to measure the inductance, capacitance and, resistance of a component. It works on the ... in parallel (as would be encountered in measuring a capacitor with a leaky dielectric) [Q setting ]
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81 views
1 answer
asked
Sep 6, 2018
by
anonymous
What is meant by energy meter constant?
Last Answer : Energy Meter Constant A fixed value which is used when converting meter readings to actual energy use, especially when potential transformers and similar types of equipment are used in metering. For example, K=--------rev/Kwh
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97 views
1 answer
asked
Sep 6, 2018
by
anonymous
With neat diagram explain calibration of energy meter by direct loading method.
Last Answer : Calibration of Energy Meter by Direct Loading Method: There are three methods for testing/calibration: 1. Long period dial test 2. Using rotary sub- standard meter 3. Using precision grade instruments All ... of substandard meter in kWh Then % error = [(D - DS)/DS] x 100
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1.1k views
1 answer
asked
Sep 6, 2018
by
anonymous
Explain working of Weston type frequency meter.
Last Answer : Weston Type Frequency Meter: There are two fixed coils marked as A and B. Each coil divided into two equal parts and are fixed such that their magnetic axis are perpendicular to each ... leading to deflections in either direction depending on the currents there in, due to changed impedances.
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3.5k views
2 answers
asked
Sep 5, 2018
by
anonymous
Why energy meter is integrating type measuring instrument?
Last Answer : Energy Meter is Integrating Type Measuring Instrument: Energy meter is used for measurement of energy, which is obtained by integration (summation) of power supplied over the particular time duration, hence it the integrating type measuring instrument.
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128 views
1 answer
asked
Sep 5, 2018
by
anonymous
Write any two advantages of digital energy meter.
Last Answer : Advantages of Digital Energy Meter: 1) Easy to read. 2) High accuracy 3) High resolution. 4) No frictional losses as there are no moving parts. 5) No requirement for external adjustments. 6) Large ... due to absence of moving parts. 7) Highly efficient. 8) Very much compact. 9) Good reliability.
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91 views
1 answer
asked
Sep 5, 2018
by
anonymous
State the application of phase sequence indicator; clip on ammeter, frequency meter & P.F. meter.
Last Answer : Phase Sequence Indicator: 1. For finding correct phase sequence of supply 2. For obtaining exact instant of parallel operation of alternators. 3. For obtaining reversal of rotation ... 4. In electroplating industries 5. In various processes industries for measuring power factor
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146 views
1 answer
asked
Sep 5, 2018
by
anonymous
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List any four errors in induction type energy meter. Give method of compensation for each.
Last Answer : Errors in Induction Type Energy Meter with their Compensation: 1) Error due to friction: This error can be compensated by the additional shading band provided on the shunt electromagnet. 2) Phase ... error: This error can be compensated by providing a flux diverter' to the current magnet.
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1.9k views
1 answer
asked
Sep 5, 2018
by
anonymous
kWh meter is the electric meter that measures the amount of electrical _________ in kWh that was consumed in the house. (A) Energy (B) Current (C) Voltage (D) None of the above
Last Answer : kWh meter is the electric meter that measures the amount of electrical Energy in kWh that was consumed in the house.
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87 views
1 answer
asked
May 8, 2018
by
anonymous
For measurement of radio frequency ac signals __________ type meter is used
Last Answer : For measurement of radio frequency ac signals thermo-couple type meter is used
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180 views
1 answer
asked
Apr 30, 2018
by
anonymous
A moving coil of meter has 100 turns, and a length and depth of 10mm and 20mm respectively. It is positioned in a uniform radial flux density of 200 mT. The coil carrier current capacity is 50 mA. The torque on the coil is
Last Answer : A moving coil of meter has 100 turns, and a length and depth of 10mm and 20mm respectively. It is positioned in a uniform radial flux density of 200 mT. The coil carrier current capacity is 50 mA. The torque on the coil is 200µNm
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737 views
1 answer
asked
Apr 29, 2018
by
anonymous
What is the power factor when a single phase watt meter operating on 200 V and 5 A for 5 hours makes 2016 revolutions and the meter constant in revolution is 420? A) 0.04 B) 1.04 C) 0.96 D) None of these
Last Answer : What is the power factor when a single phase watt meter operating on 200 V and 5 A for 5 hours makes 2016 revolutions and the meter constant in revolution is 420? A) 0.04 B) 1.04 C) 0.96 D) None of these
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208 views
1 answer
asked
Apr 29, 2018
by
anonymous
The meter which does not have any component in it to provide control torque is (A) Electrodynamometer for current measurement (B) Electrodynamometer for voltage measurement (C) Electrodynamometer for power measurement. (D) Electrodynamometer for power factor measurement.
Last Answer : The meter which does not have any component in it to provide control torque is Electrodynamometer for power factor measurement.
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157 views
1 answer
asked
Apr 28, 2018
by
anonymous
An induction type energy meter is found to run fast. Correction for this error can be made by (A) Over-load compensation. (B) Voltage compensation. (C) Moving the brake magnet away from the centre of the disc. (D) Moving the brake magnet towards the centre of the disc.
Last Answer : An induction type energy meter is found to run fast. Correction for this error can be made by Moving the brake magnet away from the centre of the disc.
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157 views
1 answer
asked
Apr 28, 2018
by
anonymous
A 200 V, 5 A d.c. energy meter is tested at its marked ratings. The resistance of the pressure circuit is 8000 Ω and that of current coil is 0.1 Ω. The power consumed when testing the meter with phantom loading with current circuit excited by a 6 V battery is (A) 2.5 W (B) 5 W (C) 32.5 W (D) 35 W
Last Answer : A 200 V, 5 A d.c. energy meter is tested at its marked ratings. The resistance of the pressure circuit is 8000 Ω and that of current coil is 0.1 Ω. The power consumed when testing the meter with phantom loading with current circuit excited by a 6 V battery is 35 W
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129 views
1 answer
asked
Apr 28, 2018
by
anonymous
A moving coil meter has a resistance of 3 Ω and gives full scale deflection with 30 mA. To measure voltage up to 300 V, the external resistance to be connected in series with the instrument is (A) 9997 Ω (B) 10000 Ω (C) 997 Ω (D) 10003 Ω
Last Answer : A moving coil meter has a resistance of 3 Ω and gives full scale deflection with 30 mA. To measure voltage up to 300 V, the external resistance to be connected in series with the instrument is 9997 Ω
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190 views
1 answer
asked
Apr 28, 2018
by
anonymous
The disc of a single phase Induction-type energy meter makes 60 revolutions in 6 minutes. Meter Constant is 1200 rev/kWh. Power consumption in the load is (A) 1.2 kW (B) 1 kW (C) 600 W (D) 500 W
Last Answer : The disc of a single phase Induction-type energy meter makes 60 revolutions in 6 minutes. Meter Constant is 1200 rev/kWh. Power consumption in the load is 500 W
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220 views
1 answer
asked
Apr 25, 2018
by
anonymous
One newton meter is same as?
Last Answer : One newton meter is same as one joule.
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80 views
1 answer
asked
Mar 25, 2018
by
anonymous
Last Answer : A Weston frequency meter is moving iron instrument.
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86 views
1 answer
asked
Mar 21, 2018
by
anonymous
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Last Answer : In a Weston frequency meter, the magnetic axes of the two fixed coils are perpendicular.
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199 views
1 answer
asked
Mar 21, 2018
by
anonymous
Last Answer : In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of 0.5 Hz.
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245 views
1 answer
asked
Mar 21, 2018
by
anonymous
Last Answer : In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at 120°.
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132 views
1 answer
asked
Mar 21, 2018
by
anonymous
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Last Answer : In a single phase power factor meter the phase difference between the currents in the two pressure coils is exactly 90°.
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352 views
1 answer
asked
Mar 21, 2018
by
anonymous
