How do you read a KWH Meter?

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asked Mar 10, 2018 by anonymous

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asked May 8, 2018 by anonymous

kWh meter is the electric meter that measures the amount of electrical _________ in kWh that

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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61 views 1 answer

asked Jun 18, 2018 by anonymous

The average time required to reach a storage location in the memory to read or retrieve the contents of

The average time required to reach a storage location in the memory to read or retrieve the contents of memory is called as A) Turnaround time B) Latency time C) Access time D) Response time

Last answer: The average time required to reach a storage location in the memory to read or retrieve the contents of memory is called as Access time

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182 views 1 answer

asked Mar 10, 2018 by anonymous

Why the read of 3 phase voltage is 440?

Last answer: The read of a phase voltage should be approximatly 240v. This is because line voltage equals to quberoot of phase voltage.

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69 views 1 answer

asked Mar 10, 2018 by anonymous

What is a digital power meter?

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asked Mar 10, 2018 by anonymous

What is an RF Power Meter?

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asked Mar 10, 2018 by anonymous

What does an electric meter measure?

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asked Mar 10, 2018 by anonymous

What is power quality meter?

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asked Mar 10, 2018 by anonymous

How do you measure power factor?

Last answer: P= 1.83*V*I*COS@ where P is power V is voltage I is current COS @ is P.F COS@= P/(1.83*V*I) in other way cos @ = true power/apparent power

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66 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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142 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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83 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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79 views 1 answer

asked Apr 29, 2018 by anonymous

A moving coil of meter has 100 turns, and a length and depth of 10mm and 20mm respectively. It is positioned

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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273 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

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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135 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

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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107 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

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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115 views 1 answer

asked Apr 25, 2018 by anonymous

The disc of a single phase Induction-type energy meter makes 60 revolutions in 6 minutes. Meter Constant is

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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139 views 1 answer

asked Mar 21, 2018 by anonymous

A Weston frequency meter is?

Last answer: A Weston frequency meter is moving iron instrument.

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52 views 1 answer

asked Mar 21, 2018 by anonymous

In a Weston frequency meter, the magnetic axes of the two fixed coils are?

Last answer: In a Weston frequency meter, the magnetic axes of the two fixed coils are perpendicular.

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74 views 1 answer

asked Mar 21, 2018 by anonymous

In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of?

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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176 views 1 answer

asked Mar 21, 2018 by anonymous

In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at?

Last answer: In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at 120°.

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80 views 1 answer

asked Mar 21, 2018 by anonymous

In a single phase power factor meter the phase difference between the currents in the two pressure coils is?

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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158 views 1 answer

asked Mar 21, 2018 by anonymous

The two pressure coils of a single phase power factor meter have?

Last answer: The two pressure coils of a single phase power factor meter have the same dimensions and the same number of turns.

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72 views 1 answer

asked Mar 21, 2018 by anonymous

A power factor meter has?

Last answer: A power factor meter has one current circuit and two pressure circuits.

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48 views 1 answer

asked Mar 21, 2018 by anonymous

The multiplier and the meter coil in a voltmeter are in?

Last answer: The multiplier and the meter coil in a voltmeter are in series.

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133 views 1 answer

asked Jun 26, 2020 by anonymous

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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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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asked Aug 21, 2019 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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536 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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asked Aug 17, 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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asked Aug 5, 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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50 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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60 views 1 answer

asked Sep 22, 2018 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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67 views 1 answer

asked Sep 8, 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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93 views 1 answer

asked Sep 6, 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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4.1k 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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71 views 1 answer

asked Sep 6, 2018 by anonymous

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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50 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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198 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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53 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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58 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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42 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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58 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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705 views 1 answer

asked Sep 5, 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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3.1k 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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64 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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48 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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111 views 1 answer

asked Sep 5, 2018 by anonymous

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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708 views 1 answer

asked Apr 30, 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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119 views 1 answer

asked Apr 28, 2018 by anonymous

The meter which does not have any component in it to provide control torque is

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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118 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

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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106 views 1 answer

How do you read a KWH Meter?

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