Watt is a unit of - (1) Time (2) Power (3) Light (4) intensity of light

Watt is a unit of - (1) Time (2) Power (3) Light (4) intensity of light
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SI unit of luminous intensity is ______. (1) lumen (2) lux (3) candela (4) watt

Description : SI unit of luminous intensity is ______. (1) lumen (2) lux (3) candela (4) watt

Last Answer : (3) candela Explanation: Luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a ... the sensitivity of the human eye. The SI unit of luminous intensity is the candela (cd).

ECE Board Exam March 1996 A car horn outdoors produces a sound intensity level of 90 dB at 10 ft away. At this distance, what is the sound power in watt? A. 12 W B. 0.12 W C. 0.012 W D. 1.2 W

Description : ECE Board Exam March 1996 A car horn outdoors produces a sound intensity level of 90 dB at 10 ft away. At this distance, what is the sound power in watt? A. 12 W B. 0.12 W C. 0.012 W D. 1.2 W

Last Answer : C. 0.012 W

Dioptere is the unit of – (1) power of a lens (2) focal length of a lens (3) light intensity (4) sound intensity

Description : Dioptere is the unit of – (1) power of a lens (2) focal length of a lens (3) light intensity (4) sound intensity

Last Answer : (1) power of a lens

Dioptere is the unit of (1) power of a lens (2) focal length of a lens (3) light intensity (4) sound intensity

Description : Dioptere is the unit of (1) power of a lens (2) focal length of a lens (3) light intensity (4) sound intensity

Last Answer : power of a lens

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.

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

A light year is a unit of – (1) time (2) distance (3) speed of light (4) intensity of light

Description : A light year is a unit of – (1) time (2) distance (3) speed of light (4) intensity of light

Last Answer : (2) distance Explanation: As defined by the International. Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year. It is a measure of distance (rather than, as is sometimes misunderstood, a measure of time).

Light year is a unit of - (1) time (2) distance (3) light (4) intensity of light

Description : Light year is a unit of - (1) time (2) distance (3) light (4) intensity of light

Last Answer : (2) distance Explanation: A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second.

A 60W lamp is rated at 0.8 watt/candela. Calculate (i) luminous intensity of the lamp, (ii) luminous flux of the lamp, and (iii) illuminance at a dist

Description : A 60W lamp is rated at 0.8 watt/candela. Calculate (i) luminous intensity of the lamp, (ii) luminous flux of the lamp, and (iii) illuminance at a dist

Last Answer : A 60W lamp is rated at 0.8 watt/candela. Calculate (i) luminous intensity of the lamp, (ii) ... iii) illuminance at a distance of 2m from the lamp.

Decibel is the unit of ______. (1) Speed of light (2) Intensity of sound (3) Intensity of heat (4) None of these

Description : Decibel is the unit of ______. (1) Speed of light (2) Intensity of sound (3) Intensity of heat (4) None of these

Last Answer : (2) Intensity of sound Explanation: Decibel (dB) unit is used for expressing the ratio between two amounts of electric or acoustic power for measuring the relative loudness of sounds.

Decibel is the unit used for – (1) Speed of light (2) Intensity of heat (3) Intensity of sound (4) Radio wave frequency

Description : Decibel is the unit used for – (1) Speed of light (2) Intensity of heat (3) Intensity of sound (4) Radio wave frequency

Last Answer : (3) Intensity of sound Explanation: The decibel (abbreviated dB) is the unit used to measure the intensity of a sound. The decibel scale is a little odd because the human ear is incredibly ... of a physical quantity (usually power or intensity) relative to a specified or implied reference level.

Decibel is the unit used for (1) Speed of light (2) Intensity of heat (3) Intensity of sound (4) Radio wave frequency

Description : Decibel is the unit used for (1) Speed of light (2) Intensity of heat (3) Intensity of sound (4) Radio wave frequency

Last Answer : Intensity of sound

What is the SI unit of frequency? (1) Newton (2) Watt (3) Farad (4) Hertz

Description : What is the SI unit of frequency? (1) Newton (2) Watt (3) Farad (4) Hertz

Last Answer : (4) Hertz Explanation: The number of waves or vibrations passing through a point in one second is called Frequency. The SI (System International) Unit of Frequency is Hertz(Hz).

Which of the following is NOT an SI unit of measure? w) watt x) newton y) joule z) erg e) second

Description : Which of the following is NOT an SI unit of measure? w) watt x) newton y) joule z) erg e) second

Last Answer : ANSWER: Z -- ERG

Is the filament resistance lower or higher in a 500 watt light bulb than in a 100 watt light? Assume that both bulbs have been designed to operate at 110 volts.

Description : Is the filament resistance lower or higher in a 500 watt light bulb than in a 100 watt light? Assume that both bulbs have been designed to operate at 110 volts. 

Last Answer : ANSWER: LOWER

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

How much energy in consumed if a 100 watt light bulb is operated for 10 MINUTES?

Description : How much energy in consumed if a 100 watt light bulb is operated for 10 MINUTES?

Last Answer : ANSWER: 60,000 JOULES or 60kJ or 6X104J

Used normally, a 150-watt, 120 volt light bulb requires how many amps of current?

Description : Used normally, a 150-watt, 120 volt light bulb requires how many amps of current?

Last Answer : ANSWER: 1.25 AMPS 

The unit of electrical power is the _____________. A. ampere B. kilovolt C. watt D. farad

Description : The unit of electrical power is the _____________. A. ampere B. kilovolt C. watt D. farad

Last Answer : Answer: C

The unit of apparent power in a purely inductive circuit is called the _____________. A. kva B. var C. emf D. watt

Description : The unit of apparent power in a purely inductive circuit is called the _____________. A. kva B. var C. emf D. watt

Last Answer : Answer: B

The unit of power in S.I. units is (A) Newton meter (B) Watt (C) Joule (D) Kilogram meter/sec

Description : The unit of power in S.I. units is (A) Newton meter (B) Watt (C) Joule (D) Kilogram meter/sec

Last Answer : (B) Watt

The unit of power in S.I. units is  (a) newton  (b) pascal  (c) erg  (d) watt  (e) joule.

Description : The unit of power in S.I. units is  (a) newton  (b) pascal  (c) erg  (d) watt  (e) joule.

Last Answer : Answer : d

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

The electrical power unit Giga Watt (GW) may be written as a) 1,000,000 MW b) 1,000 MW c) 1,000 kW d) 1,000,000 W

Description : The electrical power unit Giga Watt (GW) may be written as a) 1,000,000 MW b) 1,000 MW c) 1,000 kW d) 1,000,000 W

Last Answer : b) 1,000 MW

Unit of Power is_____________. A. Watt B. Joule C. Ampere D. Coulomb

Description : Unit of Power is_____________. A. Watt B. Joule C. Ampere D. Coulomb 

Last Answer : Unit of Power is Watt. 

Two 100 watt light bulbs are connected in parallel across a 100 volt power supply. The total power developed in the circuit is _______________. A. 200 watts B. 100 watts C. 50 watts D. equal to the product of the amperes times the voltage in each branch

Description : Two 100 watt light bulbs are connected in parallel across a 100 volt power supply. The total power developed in the circuit is _______________. A. 200 watts B. 100 watts C. 50 watts D. equal to the product of the amperes times the voltage in each branch

Last Answer : Answer: A

What current is required to light two 75 watt lamps and one 40 watt lamp when connected in series to a 120 volt power source? A. 0.161 amperes B. 0.631 amperes C. 1.583 amperes D. 6.199 amperes

Description : What current is required to light two 75 watt lamps and one 40 watt lamp when connected in series to a 120 volt power source? A. 0.161 amperes B. 0.631 amperes C. 1.583 amperes D. 6.199 amperes

Last Answer : Answer: C

What is the unit of intensity of sound in Si method ?

Description : What is the unit of intensity of sound in Si method ?

Last Answer : The unit of sound intensity in the Si method is Wm ^ -2

Curie is an unit of – (1) Radioactivity (2) energy of Gamma rays (3) intensity of Gamma rays (4) work function

Description : Curie is an unit of – (1) Radioactivity (2) energy of Gamma rays (3) intensity of Gamma rays (4) work function

Last Answer : (1) Radioactivity Explanation: The curie (symbol Ci) is a non-SI unit of radioactivity, named 'in honour of Pierre Curie. It was originally defined as "the quantity or mass of radium emanation in equilibrium with one gram of radium (element)".

Hertz is a unit for measuring – (1) Intensity of waves (2) Frequency of waves (3) Wavelength (4) Clarity of waves

Description : Hertz is a unit for measuring – (1) Intensity of waves (2) Frequency of waves (3) Wavelength (4) Clarity of waves

Last Answer : (2) Frequency of waves

Sound energy passing per second through a unit area held perpendicular is called - (1) Intensity (2) Frequency (3) Amplitude (4) Quality

Description : Sound energy passing per second through a unit area held perpendicular is called - (1) Intensity (2) Frequency (3) Amplitude (4) Quality

Last Answer : (1) Intensity Explanation: Sound energy passes through a unit area held perpendicular to the direction of propagation of sound waves is called intensity of sound.

Lux is the SI unit of - (1) intensity of illumination (2) luminous efficiency (3) luminous flux (4) luminous intensity

Description : Lux is the SI unit of - (1) intensity of illumination (2) luminous efficiency (3) luminous flux (4) luminous intensity

Last Answer : (1) intensity of illumination Explanation: The SI unit of intensity of illumination (illuminance) is the lux. An illuminance of 1.0 lux is produced by 1.0 lumen of light shining on an area of 1.0 m2.

Unit of luminous intensity is A. m B. kg C. cd D. mol

Description :  Unit of luminous intensity is A. m B. kg C. cd D. mol

Last Answer : . m

Curie is an unit of (1) Radioactivity (2) energy of Gamma rays (3) intensity of Gamma rays (4) work function

Description : Curie is an unit of (1) Radioactivity (2) energy of Gamma rays (3) intensity of Gamma rays (4) work function

Last Answer : Radioactivity

Hertz is a unit for measuring (1) Intensity of waves (2) Frequency of waves (3) Wavelength (4) Clarity of waves

Description : Hertz is a unit for measuring (1) Intensity of waves (2) Frequency of waves (3) Wavelength (4) Clarity of waves

Last Answer : Frequency of waves

What is the symbol of the unit of light intensity ?

Description : What is the symbol of the unit of light intensity ?

Last Answer : The symbol of the unit of light intensity Cd.

The modern unit of intensity of light is ______.

Description : The modern unit of intensity of light is ______.

Last Answer : The modern unit of intensity of light is ______. A. lumen B. candle power C. lux D. All the above.

Plants adapted to low light intensity have (a) larger photosynthetic unit size than the sun plants (b) higher rate of CO2 fixation than the sun plants (c) more extended root system (d) leaves modified to spines.

Description : Plants adapted to low light intensity have (a) larger photosynthetic unit size than the sun plants (b) higher rate of CO2 fixation than the sun plants (c) more extended root system (d) leaves modified to spines.

Last Answer : (a) larger photosynthetic unit size than the sun plants

Light intensity is generally described in terms of __________ and measured in _________. ∙ A. Luminous flux density; Lumens per unit area ∙ B. Luminous flux intensity; Lumens per unit area ∙ C. Luminous flux density; Lumens per unit volume ∙ D. Luminous flux intensity; Lumens per unit volume

Description : Light intensity is generally described in terms of __________ and measured in _________. ∙ A. Luminous flux density; Lumens per unit area ∙ B. Luminous flux intensity; Lumens per unit area ∙ C. Luminous flux density; Lumens per unit volume ∙ D. Luminous flux intensity; Lumens per unit volume

Last Answer : Luminous flux density; Lumens per unit area

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

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

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 resistance is the _____________. A. ampere B. volt C. watt D. ohm

Description : The unit of electrical resistance is the _____________. A. ampere B. volt C. watt D. ohm

Last Answer : Answer: D

Kilo watt – Hour is a unit of –

Description : Kilo watt – Hour is a unit of –

Last Answer : Energy

What is the unit of electric field strength? A. Watt/meter B. Ohms/meter C. Ampere/meter D. Watt/meter2 E. No answer

Description : What is the unit of electric field strength? A. Watt/meter B. Ohms/meter C. Ampere/meter D. Watt/meter2 E. No answer

Last Answer : E. No answer

Pick out the wrong statement. (A) Superheated steam is preferably not used for process heating because of its low heat transfer film co-efficient (B) In a shell and tube heat exchanger, the shell pressure drop is maximum for orifice baffles (C) S.I. unit of fouling factor is Watt/m2 .°K (D) Longitudinal fins are used in extended surface heat exchangers, when the direction of fluid flow is parallel to the axis of the tube

Description : Pick out the wrong statement. (A) Superheated steam is preferably not used for process heating because of its low heat transfer film co-efficient (B) In a shell and tube heat exchanger ... surface heat exchangers, when the direction of fluid flow is parallel to the axis of the tube

Last Answer : (C) S.I. unit of fouling factor is Watt/m2 .°K

According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in-----? A. 2 hours B. 5 hours C. 8 hours D. 10 hours (Answer)

Description : According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in-----? A. 2 hours B. 5 hours C. 8 hours D. 10 hours (Answer)

Last Answer : D. 10 hours (Answer)

According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in------? A. 1 hours B. 5 hours C. 10 hours (Answer) D. 15 hours

Description : According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in------? A. 1 hours B. 5 hours C. 10 hours (Answer) D. 15 hours

Last Answer : C. 10 hours (Answer)

Which of the following is not the unit of energy? (A) kg m (B) kcal (C) watt (D) watt hours

Description : Which of the following is not the unit of energy?  (A) kg m  (B) kcal  (C) watt  (D) watt hours 

Last Answer : (C) watt 

The unit of force in S.I. units is (A) Kilogram (B) Newton (C) Watt (D) Dyne

Description : The unit of force in S.I. units is (A) Kilogram (B) Newton (C) Watt (D) Dyne

Last Answer : (B) Newton