Induction watt-hour meters are free from

Induction watt-hour meters are free from (a) phase (b) creeping (c) temperature (d) frequency
by

1 Answer

Answer :

b
by
by
A

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The meter constant of a single-phase 230 V induction watt hour meter is 400 revolutions per kWh....

Description : The meter constant of a single-phase 230 V induction watt hour meter is 400 revolutions per kWh. The speed of the meter disc for a current of 10 A of 0.9 pf lagging will be

Last Answer : The meter constant of a single-phase 230 V induction watt hour meter is 400 revolutions per kWh. The speed of the meter disc for a current of 10 A of 0.9 pf lagging will be 13.80 rpm

Light load adjustments for induction type energy meters are usually done at

Description : Light load adjustments for induction type energy meters are usually done at   (a) 10% of full load current (b) 5% of full load current (c) 50% of full load current (d) 1% of full load current 

Last Answer : Light load adjustments for induction type energy meters are usually done at 5% of full load current

Induction type single phase energy meters measure electric energy in?

Last Answer : Induction type single phase energy meters measure electric energy in kWh.

The two watt meters measurement the ratio of two meter readings is –(1-sqrt3):( 1+sqrt3) then the power factor is a) 1 b) 0.866 c) 0.707 d) 0

Description : The two watt meters measurement the ratio of two meter readings is –(1-sqrt3):( 1+sqrt3) then the power factor is a) 1 b) 0.866 c) 0.707 d) 0

Last Answer : Ans: 0.707

A 10,000-watt motor operates an elevator weighing 5000 newtons. Assuming no frictional losses, how high is the elevator raised in 10 seconds. Is it raised: w) 2 meters x) 20 meters y) 50 meters z) 100 meters

Description : A 10,000-watt motor operates an elevator weighing 5000 newtons. Assuming no frictional losses, how high is the elevator raised in 10 seconds. Is it raised: w) 2 meters x) 20 meters y) 50 meters z) 100 meters

Last Answer : ANSWER: X -- 20 METERS

Power (P) in a 3 phase circuit with two watt meters at unity power factor is (W1 & W2 = watt meter readings)

Description : Power (P) in a 3 phase circuit with two watt meters at unity power factor is (W1 & W2 = watt meter readings)

Last Answer : Power (P) in a 3 phase circuit with two watt meters at unity power factor is P = W1 + W2 (W1 & W2 = watt meter readings)

Which of the following is not a unit of energy? a.Joule b.kW c.N-m d.Electron volt e.Watt-hour

Description : Which of the following is not a unit of energy? a.Joule b.kW c.N-m d.Electron volt e.Watt-hour

Last Answer : b. kW

How many joules is equal to one watt hour ?

Description : How many joules is equal to one watt hour ?

Last Answer : One watt hour equals 3600 J.

What is equal to 1 watt hour ?

Description : What is equal to 1 watt hour ?

Last Answer : 1 watt hour = 0.001 kilowatt hour

How many hours will a 200 amp hour battery last at 168 watt?

Description : How many hours will a 200 amp hour battery last at 168 watt?

Last Answer : If it is a car battery (as given in the category) it is reasonably safe to assume that under load it is about 12V. I = P/E = 168W / 12V = 14A T = 200AH / 14A = 14.29H However ... battery. This is also assuming that the car battery is not being charged at any time while the load is present.

One kilowatt-hour is the amount of electrical energy that is consumed by 1000 watt appliance in ____. A. 30 minutes B. 45 minutes C. 1 hour D. 1 our and 15 minutes

Description : One kilowatt-hour is the amount of electrical energy that is consumed by 1000 watt appliance in ____. A. 30 minutes B. 45 minutes C. 1 hour D. 1 our and 15 minutes

Last Answer : ANSWER: C

Units of electricity consumed by 2500 watt airconditioner in one hour are: A. 0.25 units B. 1.25 units C. 2.5 units D. 25 units

Description : Units of electricity consumed by 2500 watt airconditioner in one hour are: A. 0.25 units B. 1.25 units C. 2.5 units D. 25 units

Last Answer : ANSWER: D

According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in _____. A. 1 Hour B. 5 Hours C. 8 Hours D. 10 Hours

Description : According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in _____. A. 1 Hour B. 5 Hours C. 8 Hours D. 10 Hours

Last Answer : ANSWER: D

One kilowatt-hour is the amount of electrical energy that is consumed by 1000 watt appliance in ____. A. 30 minutes B. 45 minutes C. 1 hour 24 D. 1 our and 15 minutes

Description : One kilowatt-hour is the amount of electrical energy that is consumed by 1000 watt appliance in ____. A. 30 minutes B. 45 minutes C. 1 hour 24 D. 1 our and 15 minutes

Last Answer : ANSWER: C

One kilowatt-hour is the amount of electrical energy that is consumed by 1000 watt appliance in ____. A. 30 minutes B. 45 minutes C. 1 hour D. 1 our and 15 minutes

Description : One kilowatt-hour is the amount of electrical energy that is consumed by 1000 watt appliance in ____. A. 30 minutes B. 45 minutes C. 1 hour D. 1 our and 15 minutes

Last Answer : ANSWER: C

Units of electricity consumed by 2500 watt airconditioner in one hour are: A. 0.25 units B. 1.25 units C. 2.5 units D. 25 units

Description : Units of electricity consumed by 2500 watt airconditioner in one hour are: A. 0.25 units B. 1.25 units C. 2.5 units D. 25 units

Last Answer : ANSWER: D

According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in _____. A. 1 Hour B. 5 Hours C. 8 Hours D. 10 Hours

Description : According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in _____. A. 1 Hour B. 5 Hours C. 8 Hours D. 10 Hours

Last Answer : ANSWER: D

The unit of electrical power is – (1) Bolt (2) Watt (3) Kilowatt hour (4) Ampere

Description : The unit of electrical power is – (1) Bolt (2) Watt (3) Kilowatt hour (4) Ampere

Last Answer : (2) Watt Explanation: Electric power is the rate at which electric energy is transferred by an electric circuit. The SI unit of power is the watt, one joule per second. Watt is named after the Scottish engineer James Watt who invented the Newcomen Steam Engine.

Kilo watt – Hour is a unit of –

Description : Kilo watt – Hour is a unit of –

Last Answer : Energy

What refers to the amount of heat removed from the cooled space in BTS’s for 1 watt-hour of electricity consumed?  A. Cost efficiency rating  B. Energy efficiency rating  C. Coefficient of performance  D. Cost of performance

Description : What refers to the amount of heat removed from the cooled space in BTS’s for 1 watt-hour of electricity consumed?  A. Cost efficiency rating  B. Energy efficiency rating  C. Coefficient of performance  D. Cost of performance

Last Answer : Energy efficiency rating

The S.I. unit of power is (a) Henry (b) coulomb (c) watt (d) watt-hour

Description : The S.I. unit of power is (a) Henry (b) coulomb (c) watt (d) watt-hour

Last Answer : (c) watt

What is the quantity shown on the watt-hour meter in figure 1-46?

Description : What is the quantity shown on the watt-hour meter in figure 1-46?

Last Answer : 5.945 megawatt-hours, or 5,945 kilowatt-hours, or 5,945, 000 watt-hours.

What electrical quantity is measured by a watt-hour meter?

Description : What electrical quantity is measured by a watt-hour meter?

Last Answer : Energy.

What type of instrument is the watt-hour meter?

Description : What type of instrument is the watt-hour meter?

Last Answer : an integrating

0.001 Kg mass will be equivalent to a) 2.50 Giga watt hour b) 25.00 giga watt hour c) 0.26 giga watt hour d) None of the above

Description : 0.001 Kg mass will be equivalent to a) 2.50 Giga watt hour b) 25.00 giga watt hour c) 0.26 giga watt hour d) None of the above

Last Answer : b) 25.00 giga watt hour

Electrical energy is measured in a. watt b. horse power c. kilo watt d. kilowatt hour

Description : Electrical energy is measured in a. watt b. horse power c. kilo watt d. kilowatt hour

Last Answer : d. kilowatt hour

A 100-watt light bulb is left on for 10 hours. Electricity is 10 cents per kilowatt-hour. How much did it cost to operate the light bulb?

Description : A 100-watt light bulb is left on for 10 hours. Electricity is 10 cents per kilowatt-hour. How much did it cost to operate the light bulb?

Last Answer : ANSWER: 10 CENTS

A homeowner replaces a 65 watt incandescent bulb with a 15 watt compact fluorescent lamp. The light is on 2000 hours a year. If electricity cost 10 cents a kilowatt-hour, how much money is saved on the electric bill in one year? w) $50.00 x) $10.00 y) $5.00 z) $1.00

Description : A homeowner replaces a 65 watt incandescent bulb with a 15 watt compact fluorescent lamp. The light is on 2000 hours a year. If electricity cost 10 cents a kilowatt-hour, how much money is saved on the electric bill in one year? w) $50.00 x) $10.00 y) $5.00 z) $1.00 

Last Answer : ANSWER: X -- $10.00 

The unit of electrical power is (1) Bolt (2) Watt (3) Kilowatt hour (4) Ampere

Description : The unit of electrical power is (1) Bolt (2) Watt (3) Kilowatt hour (4) Ampere

Last Answer : Bolt

Digital meters are superior over analogue meters because

Description : Digital meters are superior over analogue meters because (A) less expensive (B) output reading is binary in nature (C) output impedance is less (D) installation is easy as panel meters 

Last Answer : Digital metres are superior over analogue metres because output reading is binary in nature and digital metres have various advantages over analogue metres in digital metres we can see the exact precise ... direction but if analogue meter rotate or move in any direction it may give error value

In moving coil meters, damping is provided by

Last Answer : In moving coil meters, damping is provided by eddy current disk.

If two meters X and Y requires 40mA and 50mA respectively, to give full scale deflection, then:

Last Answer : If two meters X and Y requires 40mA and 50mA respectively, to give full scale deflection, then: X is more sensitive

Most common form of A.C. meters met with in every day domestic and industrial installations are?

Last Answer : Most common form of A.C. meters met with in every day domestic and industrial installations are induction type single phase energy meters.

An induction type energy meter is found to run fast. Correction for this error can be made by

Description : 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.

The induction of a high Q inductor can be measured by a

Last Answer : The induction of a high Q inductor can be measured by a Hay Bridge.

An induction wattmeter can be used for?

Last Answer : An induction wattmeter can be used for A.C. 

For handling greater currents induction wattmeters are used in conjunction with?

Last Answer : For handling greater currents induction wattmeters are used in conjunction with current transformers.

An induction meter can handle current up to?

Last Answer : An induction meter can handle current up to 100 A.

A car travels at 20 meters per second. What is its rate in kilometers per hour?

Description : A car travels at 20 meters per second. What is its rate in kilometers per hour?

Last Answer : 20 m/s (1 kl/1000 m)(3600 s/1 hr) = 72 kilometers an hour -------------------------------

A train locomotive whose mass is 1 x 106 kilograms is traveling EAST at a speed of 100 kilometers per hour. A NORTHERLY wind is applying a force of 100 Newtons on the locomotive. How much work is the wind doing on the locomotive for each 10 meters it travels? w) 0 joules x) 1,000 joules y) 10,000 joules z) 100,000 joules

Description : A train locomotive whose mass is 1 x 106 kilograms is traveling EAST at a speed of 100 kilometers per hour. A NORTHERLY wind is applying a force of 100 Newtons on the locomotive. How much work is the wind doing ... 10 meters it travels? w) 0 joules x) 1,000 joules y) 10,000 joules z) 100,000 joules

Last Answer : ANSWER: W -- 0 JOULES

Length of train is 510 meters and speed of train is 63 km/hour. This train can pass a pole in 90 seconds, then find the length of the pole? A) 575mts B) 2500mts C) 1065mts D) 876mts

Description : Length of train is 510 meters and speed of train is 63 km/hour. This train can pass a pole in 90 seconds, then find the length of the pole? A) 575mts B) 2500mts C) 1065mts D) 876mts

Last Answer : ANSWER: C Explanation: Given speed of the train = 63 km/hr = 63*5/18 m/s =17.5m/s Let the length of the pole = x mts Given time taken to cover the distance of (510+ x)mts is 90 sec. We know speed = ... m/s 17. 5 = 510+x/90 1575 = 510+x x = 1065 Therefore the length of the pole is 1065 mts

In a free running oscilloscope the horizontal deflection system is driven by a ........waveform

Last Answer :  In a free running oscilloscope, the horizontal deflection system is driven by a Ramp waveform

The rectifier instrument is not free from?

Last Answer : The rectifier instrument is not free from frequency error.

Can you damage your eyes if you look directly at a lit 100 watt bulb?

Description : Can you damage your eyes if you look directly at a lit 100 watt bulb?

Last Answer : It all depends on how far away you are, and how much ambient light there is already, But no, even holding your face eight inches away in a dark room won’t do any significant damage. Your pupils will contract so no damage is done.

Can I replace a 60 watt incandescent light bulb with a fluorescent or LED bulb that puts out more light than the incandescent?

Description : Can I replace a 60 watt incandescent light bulb with a fluorescent or LED bulb that puts out more light than the incandescent?

Last Answer : Light output is measured in lumens, and yes, you can find a fluorescent bulb in lumen output equal to or greater than an incandescent 75 or 100 watt bulb.And it won’t be anywhere near 60 watts, so you are safe.

Would you have use for candelabra bulbs that were energy saving (CFL or LED), yet produced 75+ watt light equivalent?

Description : Would you have use for candelabra bulbs that were energy saving (CFL or LED), yet produced 75+ watt light equivalent?

Last Answer : answer:No, because I ate my vegetables when I was a kid and don't have a Daylight only restriction on my drivers license. Seriously though, like many people, my home lighting is 40W-equivalent for ... the lower wattage bulbs are plenty bright enough for most people. TL:DR - it's lack of demand.

Realistically, what can a 45 watt solar panel system be used for?

Description : Realistically, what can a 45 watt solar panel system be used for?

Last Answer : answer:More than I thought… youtube

Can I put a 26 Watt energy saver (Equivalent to 100W) in a 60 Watt max lamp?

Description : Can I put a 26 Watt energy saver (Equivalent to 100W) in a 60 Watt max lamp?

Last Answer : yes. It’s equivalent in how much light it gives off compared to a 100W incandescent bulb. Those get much hotter.

How many 64 watt Solar Panels do I need?

Description : How many 64 watt Solar Panels do I need?

Last Answer : That’s 207,000 W-h per month, or ~6800 W-h per day. Assume 10 hr of sunshine per day, so you will need 11 panels at 64 W each.

Will a 110 watt receiver power 120 watt speakers?

Description : Will a 110 watt receiver power 120 watt speakers?

Last Answer : Yes. Here’s how to think of it—it’s not that 120 watt speakers draw 120 watts, it’s that they can handle up to 120 watts.