Which one of the following is a non-dimensional quantity? (1) Gas constant (2) Strain (3) Co-efficient of viscocity (4) Plank’s constant

Which one of the following is a non-dimensional quantity? (1) Gas constant (2) Strain (3) Co-efficient of viscocity (4) Plank’s constant
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Which one of the following is a nondimensional quantity? (1) Gas constant (2) Strain (3) Co-efficient of viscosity (4) Plank's constant

Description : Which one of the following is a nondimensional quantity? (1) Gas constant (2) Strain (3) Co-efficient of viscosity (4) Plank's constant

Last Answer : (2) Strain Explanation: A dimensionless quantity is simply a quantity that has no units and therefore no dimensions. A ratio between two numbers is a non-dimensional or dimensionless quantity. ... in dimension over original dimension has no dimensional formula. So it is a. dimensionless quantity.

Gravitational constant (G) is an example of (a) Non-dimensional constant (b) Dimensional constant (c) Numeric constant (d) Quantity without dimensions

Description : Gravitational constant (G) is an example of (a) Non-dimensional constant (b) Dimensional constant (c) Numeric constant (d) Quantity without dimensions

Last Answer : Ans:(b)

Plank's constant has the dimensions of (1) energy (2) linear momentum (3) angular momentum (4) force

Description : Plank's constant has the dimensions of (1) energy (2) linear momentum (3) angular momentum (4) force

Last Answer : (1) energy Explanation: The Planck's constant (h) can be defined as a pro-portionality constant that relates the energy (E) of a photon to the frequency (?) of its associated electro-magnetic ... Planck constant is named after Max Planck, the instigator of quantum theory, who discovered it in 1900.

When light is traveling through a vacuum, what is the product of the light's wavelength and frequency equal to? w) speed of light x) Plank's constant y) momentum z) wave number

Description : When light is traveling through a vacuum, what is the product of the light's wavelength and frequency equal to? w) speed of light x) Plank's constant y) momentum z) wave number

Last Answer : ANSWER: W -- SPEED OF LIGHT

Plank’s constant has the dimensions of : (1) energy (2) linear momentum (3) angular momentum (4) force

Description : Plank’s constant has the dimensions of : (1) energy (2) linear momentum (3) angular momentum (4) force

Last Answer : energy

The left face of a one dimensional slab of thickness 0.2 m is maintained at 80°C and the right face is exposed to air at 30°C. The thermal conductivity of the slab is 1.2 W/m.K and the heat transfer co-efficient from the right face is 10 W/m2 .K. At steady state, the temperature of the right face in °C is (A) 77.2 (B) 71.2 (C) 63.8 (D) 48.7

Description : The left face of a one dimensional slab of thickness 0.2 m is maintained at 80°C and the right face is exposed to air at 30°C. The thermal conductivity of the slab is 1.2 W/m.K and the heat transfer co-efficient from the ... temperature of the right face in °C is (A) 77.2 (B) 71.2 (C) 63.8 (D) 48.7

Last Answer : (D) 48.7

Incorrect statement for co-efficient of friction could be that A. The coefficient of friction is denoted by the Greek letter µ. B. The coefficient of friction is directly proportional to the force of friction C. The coefficient of friction is constant even in the conditions of fast slipping and high contact pressure D. The coefficient of friction is inversely proportional to the force pressing the surfaces together

Description : Incorrect statement for co-efficient of friction could be that A. The coefficient of friction is denoted by the Greek letter µ. B. The coefficient of friction is directly proportional to ... D. The coefficient of friction is inversely proportional to the force pressing the surfaces together

Last Answer : The coefficient of friction is constant even in the conditions of fast slipping and high contact pressure

Unit of plank’s constant is –

Description : Unit of plank’s constant is –

Last Answer : JS

Dimensions of strain are A. [L] B. [M] [L]-1 [T]-2 C. [L]-1 D. It's a dimensionless quantity

Description : Dimensions of strain are A. [L] B. [M] [L]-1 [T]-2 C. [L]-1 D. It's a dimensionless quantity

Last Answer : It's a dimensionless quantity

For absorbing a sparingly soluble gas in a liquid (A) Gas side mass transfer co-efficient should be increased (B) Liquid side mass transfer co-efficient should be increased (C) Liquid side mass transfer co-efficient should be decreased (D) Mass transfer co-efficient must be kept constant

Description : For absorbing a sparingly soluble gas in a liquid (A) Gas side mass transfer co-efficient should be increased (B) Liquid side mass transfer co-efficient should be increased (C) Liquid side mass transfer co-efficient should be decreased (D) Mass transfer co-efficient must be kept constant

Last Answer : (B) Liquid side mass transfer co-efficient should be increased

Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature. (A) Decreases (B) Increases (C) Remains constant

Description : Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature. (A) Decreases (B) Increases (C) Remains constant

Last Answer : (B) Increases

With increase in reduced temperature, the fugacity co-efficient of a gas at constant reduced pressure (A) Increases (B) Decreases (C) Remain same (D) Decreases linearly

Description : With increase in reduced temperature, the fugacity co-efficient of a gas at constant reduced pressure (A) Increases (B) Decreases (C) Remain same (D) Decreases linearly

Last Answer : (A) Increases

The dimensional formula for universal gravitational constant is – (1) M⁻¹L³T² (2) ML²T⁻² (3) M⁻² (4) M⁻¹L³T⁻²

Description : The dimensional formula for universal gravitational constant is – (1) M⁻¹L³T² (2) ML²T⁻² (3) M⁻² (4) M⁻¹L³T⁻²

Last Answer : (4) M⁻¹L³T⁻² Explanation: Universal Constant of Gravitation is represented by G and is derived from Newton's law of gravitation.

If air (a non-condensing gas) is present in a condensing vapor stream, it will __________ the condensation rate of vapor. (A) Increase (B) Decrease (C) Not affect (D) Increase the condensing film co-efficient as well as

Description : If air (a non-condensing gas) is present in a condensing vapor stream, it will __________ the condensation rate of vapor. (A) Increase (B) Decrease (C) Not affect (D) Increase the condensing film co-efficient as well as

Last Answer : (B) Decrease

Presence of a non-condensing gas in a condensing vapour (A) Increases the rate of condensation (B) Decreases thermal resistance (C) Is desirable to increase the film co-efficient (D) None of these

Description : Presence of a non-condensing gas in a condensing vapour (A) Increases the rate of condensation (B) Decreases thermal resistance (C) Is desirable to increase the film co-efficient (D) None of these

Last Answer : (D) None of these

Vector A. It do not need the control of the human operator during their execution B. An arrow in a multi-dimensional space. It is a quantity usually characterized by an ordered set of scalars C. The validation of a theory on the basis of a finite number of examples D. None of these

Description : Vector A. It do not need the control of the human operator during their execution B. An arrow in a multi-dimensional space. It is a quantity usually characterized by an ordered set of scalars C. The validation of a theory on the basis of a finite number of examples D. None of these

Last Answer : B. An arrow in a multi-dimensional space. It is a quantity usually characterized by an ordered set of scalars

For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter (D) as (A) d (B) √d (C) d 2 (D) 1/d

Description : For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter (D) as (A) d (B) √d (C) d 2 (D) 1/d

Last Answer : (C) d

Log mean temperature difference (LMTD) cannot be used, if (A) Heat transfer co-efficient over the entire heat exchanger is not constant (B) There exists an unsteady state (C) The heat capacity is not constant and there is a phase change (D) None of these

Description : Log mean temperature difference (LMTD) cannot be used, if (A) Heat transfer co-efficient over the entire heat exchanger is not constant (B) There exists an unsteady state (C) The heat capacity is not constant and there is a phase change (D) None of these

Last Answer : (D) None of these

In Fourier's law, the proportionality constant is called the (A) Heat transfer co-efficient (B) Thermal diffusivity (C) Thermal conductivity (D) Stefan-Boltzmann constant

Description : In Fourier's law, the proportionality constant is called the (A) Heat transfer co-efficient (B) Thermal diffusivity (C) Thermal conductivity (D) Stefan-Boltzmann constant

Last Answer : (C) Thermal conductivity

Out of the following four assumptions used in the derivation of theequation for LMTD[LMTD = (∆t1- ∆t2)/ln(∆t1/∆t2)], which one is subject to the largest deviationin practice ?(A) Constant overall heat transfer co-efficient.(B) Constant rate of fluid flow(C) Constant specific heat(D) No partial phase change in the system

Description : Out of the following four assumptions used in the derivation of theequation for LMTD [LMTD = (∆t1 - ∆t2 )/ln(∆t1 /∆t2 )], which one is subject to the largest deviation in practice ? (A) Constant ... (B) Constant rate of fluid flow (C) Constant specific heat (D) No partial phase change in the system

Last Answer : (B) Constant rate of fluid flow

For a laminar flow of fluid in a circular tube, 'h1 ' is the convective heat transfer co-efficient at velocity 'V1 '. If the velocity is reduced by half and assuming the fluid properties are constant, the new convective heat transfer co-efficient is (A) 1.26 h1(B) 0.794 h1(C) 0.574 h1(D) 1.741 h1

Description : For a laminar flow of fluid in a circular tube, 'h1 ' is the convective heat transfer co-efficient at velocity 'V1 '. If the velocity is reduced by half and assuming the fluid properties are constant, the new convective heat transfer co-efficient is (A) 1.26 h1 (B) 0.794 h1 (C) 0.574 h1 (D) 1.741 h1

Last Answer : (B) 0.794 h1

The co-efficient of discharge of an orificemeter is a function of (A) Reynolds number at the orifice (B) Ratio of orifice dia to pipe dia (C) Both (A) and (B) (D) None of the above parameters, and has a constant value of 0.61

Description : The co-efficient of discharge of an orificemeter is a function of (A) Reynolds number at the orifice (B) Ratio of orifice dia to pipe dia (C) Both (A) and (B) (D) None of the above parameters, and has a constant value of 0.61

Last Answer : (C) Both (A) and (B)

(1/V) (∂V/∂T)Pis the mathematical expression (A) Joule-Thomson co-efficient (B) Specific heat at constant pressure (Cp) (C) co-efficient of thermal expansion (D) Specific heat at constant volume (CV)

Description : (1/V) (∂V/∂T)Pis the mathematical expression (A) Joule-Thomson co-efficient (B) Specific heat at constant pressure (Cp) (C) co-efficient of thermal expansion (D) Specific heat at constant volume (CV)

Last Answer : (C) co-efficient of thermal expansion

(∂T/∂P)H is the mathematical expression for (A) Specific heat at constant pressure (Cp) (B) Specific heat at constant volume (Cv) (C) Joule-Thompson co-efficient (D) None of these

Description : (∂T/∂P)H is the mathematical expression for (A) Specific heat at constant pressure (Cp) (B) Specific heat at constant volume (Cv) (C) Joule-Thompson co-efficient (D) None of these

Last Answer : (C) Joule-Thompson co-efficient

Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure. (A) Fugacity (B) Partial pressure (C) Activity co-efficient (D) All (A), (B), and (C)

Description : Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure. (A) Fugacity (B) Partial pressure (C) Activity co-efficient (D) All (A), (B), and (C)

Last Answer : (D) All (A), (B), and (C)

The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x1. x2, where A is a constant. The corresponding equation for ln y1, where y1is the activity co-efficient of component 1, is (A) A . x22 (B) Ax1 (C) Ax2 (D) Ax12

Description : The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x1. x2, where A is a constant. The corresponding equation for ln y1, where y1is the activity co-efficient of component 1, is (A) A . x22 (B) Ax1 (C) Ax2 (D) Ax12

Last Answer : (A) A . x22

The activity co-efficient of the solute in a dilute solution (A) Decreases with the increase of concentration of the solute (B) Increases with the increase of concentration of the solute (C) Remains constant (D) Is unity at infinite dilution

Description : The activity co-efficient of the solute in a dilute solution (A) Decreases with the increase of concentration of the solute (B) Increases with the increase of concentration of the solute (C) Remains constant (D) Is unity at infinite dilution

Last Answer : (C) Remains constant

A thin, flat & square plate measuring 2 m × 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2. The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is __________ W/m2 °C. (A) 50 (B) 100 (C) 150 (D) 200

Description : A thin, flat & square plate measuring 2 m 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2. The plate temperature will ... heat transfer co-efficient is __________ W/m2 °C. (A) 50 (B) 100 (C) 150 (D) 200

Last Answer : (B) 100

Higher efficiency in the combustion of solid fuel cannot be achieved by (A) Proper fuel preparation (B) Keeping the flue gas exhaust temperature very high (C) Adopting efficient-fuel firing technique & equipment (D) Supplying correct quantity of combustion air

Description : Higher efficiency in the combustion of solid fuel cannot be achieved by (A) Proper fuel preparation (B) Keeping the flue gas exhaust temperature very high (C) Adopting efficient-fuel firing technique & equipment (D) Supplying correct quantity of combustion air

Last Answer : (B) Keeping the flue gas exhaust temperature very high

Which of the following is a dimensionless quantity? (a) Shear stress (b) Poison’s ratio (c) Strain (d) Both (b) and (c)

Description : Which of the following is a dimensionless quantity? (a) Shear stress (b) Poison’s ratio (c) Strain (d) Both (b) and (c)

Last Answer : (d) Both (b) and (c)

In a strain measuring device, using a strain gauge, the output quantity is ....

Description : In a strain measuring device, using a strain gauge, the output quantity is  A) Voltage B) resistance C) Impedance D) either A) or B)

Last Answer : In a strain measuring device, using a strain gauge, the output quantity is Voltage

Mention the two planks on which the current anti-poverty strategy of the government is based. -Economics 9th

Description : Mention the two planks on which the current anti-poverty strategy of the government is based. -Economics 9th

Last Answer : The current anti-poverty strategy of the government is based broadly on two boards, being, promotion of economic growth and targeted anti-poverty programmes.

The number of planks of dimensions (4 m x 50cm x 20cm) that can be stored in a pit which is 16 m long, 12 m wide and 40 m deep is -Maths 9th

Description : The number of planks of dimensions (4 m x 50cm x 20cm) that can be stored in a pit which is 16 m long, 12 m wide and 40 m deep is -Maths 9th

Last Answer : Length of the plank=4m=400cm Breadth=50cm Height=20cm Volume of the plank=L*B*H =400*50*20 =400000cm^3 Length of the pit=16m=1600cm Breadth=12m=1200cm Height=4m=400cm Volume of the pit= L ... *1200*400 =768000000cm^3 Number of planks that can be fitted= 768000000/400000 =1920 planks is the answer.

The number of planks of dimensions (4 m x 50cm x 20cm) that can be stored in a pit which is 16 m long, 12 m wide and 40 m deep is -Maths 9th

Description : The number of planks of dimensions (4 m x 50cm x 20cm) that can be stored in a pit which is 16 m long, 12 m wide and 40 m deep is -Maths 9th

Last Answer : Solution of this question

How many planks each of which is 2 m long, -Maths 9th

Description : How many planks each of which is 2 m long, -Maths 9th

Last Answer : 2 m = 2 x 100 cm = 200 cm, 6 m = 6 x 100 = 600 cm Number of planks = Volume of wooden block/ Volume of each plank = 600 x 18 x 44/200 x 3 x 4 = 198.

Can the planks get moldy in the attic if we cover them with cover?

Description : There is already a vapor-permeable foil underneath.

Last Answer : The point is to properly insulate the slab, because then no heat bridge will be created, which could cause it to condense. So if the slab is properly filled with cotton or other insulation, you don’t have to be afraid of moisture, that is, mold.  

Mesh or planks

Description : What makes a better fence? At first I wanted a mesh, but now I'm thinking about a plank fence. It's better to paint and it's not as visible in the garden, is it? Thanks for the feedback

Last Answer : If you have access to wood or you don't have to count every crown, then planks or slats are much nicer and they seem more practical to me.

How to store wooden planks?

Description : I'll put them in the garage but it's damp, should I put them in plastic?

Last Answer : if they don't have moisture, they don't mind them, but you have to stretch them ... and load them ... 8-)) ☠ ☣ ☠ ☣ ☠ ☣ ☠ ☢

How To Grill With Cedar Planks?

Description : How To Grill With Cedar Planks?

Last Answer : If you are a backyard chef, a grill is probably in your arsenal when cooking for friends or family. Using cedar planks for direct grilling can give not only a unique flavor, but a fresh new ... taste from the planks into fish and other meats by simply using a few steps to extract the flavor.

What is the minimum overlapping of two adjacent planks in a scaffold platform?

Description : What is the minimum overlapping of two adjacent planks in a scaffold platform?

Last Answer : Not less than 12”  

Pick up the incorrect statement from the following: (A) Space between the exterior walls of a warehouse and bag piles should be 30 cm (B) Cement bags should preferably be piled on wooden planks (C) Width and height of the pile should not exceed 3 m and 2.70 m respectively (D) None of these

Description : Pick up the incorrect statement from the following: (A) Space between the exterior walls of a warehouse and bag piles should be 30 cm (B) Cement bags should preferably be piled on wooden planks (C) Width and height of the pile should not exceed 3 m and 2.70 m respectively (D) None of these

Last Answer : Answer: Option D

Veneering means (A) Carving out designs on timber planks (B) Chemically treating timber planks (C) Thick layer of superior wood glued to inferior wood (D) Thin layer of superior wood glued to inferior wood

Description : Veneering means (A) Carving out designs on timber planks (B) Chemically treating timber planks (C) Thick layer of superior wood glued to inferior wood (D) Thin layer of superior wood glued to inferior wood

Last Answer : Answer: Option C

The law that states “When visible light of high frequency electromagnetic radiation illuminates a metallic surface, electrons are emitted” is known as ____________. ∙ A. Einstein law of photon ∙ B. Marconi’s law ∙ C. Maxwell’s law ∙ D. Plank’s law

Description : The law that states “When visible light of high frequency electromagnetic radiation illuminates a metallic surface, electrons are emitted” is known as ____________. ∙ A. Einstein law of photon ∙ B. Marconi’s law ∙ C. Maxwell’s law ∙ D. Plank’s law

Last Answer : D. Plank’s law

The width of a scaffold platform or walkways must be at least? a. 3 planks 675mm (27 inches) b. 2 planks 450mm (18 inches) c. 5 planks 1,125mm (45 inches) d. 4 planks 900mm (30 inches)

Description : The width of a scaffold platform or walkways must be at least? a. 3 planks 675mm (27 inches) b. 2 planks 450mm (18 inches) c. 5 planks 1,125mm (45 inches) d. 4 planks 900mm (30 inches)

Last Answer : a. 3 planks 675mm (27 inches)

Planks must be overlapped a minimum of ------

Description : Planks must be overlapped a minimum of ------

Last Answer : 12 inches.

The gap between scaffold planks (boards) must be no more than? a. 150mm (6 inches) b. 50mm (2 inches) c. 75mm (3 inches) d. 25mm (1 inch)

Description : The gap between scaffold planks (boards) must be no more than? a. 150mm (6 inches) b. 50mm (2 inches) c. 75mm (3 inches) d. 25mm (1 inch)

Last Answer : d. 25mm (1 inch)

An ideal coolant for a nuclear reactor should (A) Be a good absorber of neutrons (B) Be capable of attaining high temperature, only when it is pressurised (C) Have high density, but low heat transfer co-efficient (D) Be free from radiation damage and non-corrosive

Description : An ideal coolant for a nuclear reactor should (A) Be a good absorber of neutrons (B) Be capable of attaining high temperature, only when it is pressurised (C) Have high density, but low heat transfer co-efficient (D) Be free from radiation damage and non-corrosive

Last Answer : (D) Be free from radiation damage and non-corrosive

The film co-efficient is decreased due to the presence of non-condensing gases in the vapors. The film co-efficient of superheated vapor as compared to that of saturated vapor is (A) More (B) Less (C) Some (D) Either more or less; depends on the nature of vapor

Description : The film co-efficient is decreased due to the presence of non-condensing gases in the vapors. The film co-efficient of superheated vapor as compared to that of saturated vapor is (A) More (B) Less (C) Some (D) Either more or less; depends on the nature of vapor

Last Answer : (C) Some

Which of the following is an undesirable property of a manometricliquid? (A) Non-sticky & non-corrosive nature (B) High vapour pressure (C) Low viscosity & surface tension (D) Low co-efficient of thermal expansion

Description : Which of the following is an undesirable property of a manometricliquid? (A) Non-sticky & non-corrosive nature (B) High vapour pressure (C) Low viscosity & surface tension (D) Low co-efficient of thermal expansion

Last Answer : (B) High vapour pressure

The importance of the correlation co-efficient lies in the fact that: (A) There is a linear relationship between the correlated variables. (B) It is one of the most valid measure of statistics. (C) It allows one to determine the degree or strength of the association be tween two variables. (D) It is a non-parametric method of statistical analysis.

Description : The importance of the correlation co-efficient lies in the fact that: (A) There is a linear relationship between the correlated variables. (B) It is one of the most valid measure of statistics. ... of the association be tween two variables. (D) It is a non-parametric method of statistical analysis.

Last Answer : (C) It allows one to determine the degree or strength of the association be tween two variables.