Maximum permissible air velocity in pipelines is about __________ metre/second. (A) 5 (B) 10 (C) 20 (D) 40

Maximum permissible air velocity in pipelines is about __________ metre/second.
(A) 5
(B) 10
(C) 20
(D) 40
by

1 Answer

Answer :

(B) 10
by

Related questions

Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second. (A) 3 × 10 5 (B) 3 × 10 8 (C) 3 × 10 10 (D) 3 × 10 12

Description : Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second. (A) 3 × 10 5 (B) 3 × 10 8 (C) 3 × 10 10 (D) 3 × 10 12

Last Answer : (B) 3 × 10

Area of steel required per metre width of pavement for a length of 20 m for design wheel load 6300 kg and permissible stress in steel 1400 kg/cm2 , is (A) 70 kg/sq cm (B) 80 kg/sq cm (C) 90 kg/sq cm (D) 100 kg/sq cm

Description : Area of steel required per metre width of pavement for a length of 20 m for design wheel load 6300 kg and permissible stress in steel 1400 kg/cm2 , is (A) 70 kg/sq cm (B) 80 kg/sq cm (C) 90 kg/sq cm (D) 100 kg/sq cm

Last Answer : Answer: Option C

The maximum permissible differential settlement, in case of foundations in clayey soil, is usually limited to (A) 10 mm (B) 20 mm (C) 30 mm (D) 40 mm

Description : The maximum permissible differential settlement, in case of foundations in clayey soil, is usually limited to (A) 10 mm (B) 20 mm (C) 30 mm (D) 40 mm

Last Answer : Answer: Option D

Pick out the wrong statement. (A) The value of hydrostatic head increases with increase in vacuum in the effect in a multiple effect evaporator system (B) Entering velocity of the liquid in the tubes of natural circulation evaporators is in the range of 0.3 to 0.9 metre/second (C) Duhring's plot is used for calculating the concentration of solution (D) In a multiple effect evaporation system, the number of effects is limited by the total boiling point rise

Description : Pick out the wrong statement. (A) The value of hydrostatic head increases with increase in vacuum in the effect in a multiple effect evaporator system (B) Entering velocity of the liquid in ... a multiple effect evaporation system, the number of effects is limited by the total boiling point rise

Last Answer : (C) Duhring's plot is used for calculating the concentration of solution

As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3 .(μg-microgram) (A) 10 (B) 90 (C) 800 (D) 750

Description : As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is __________ μg/m3 .(μg-microgram) (A) 10 (B) 90 (C) 800 (D) 750

Last Answer : (B) 90

Pick out the wrong statement about cavitation. (A) Sudden reduction of pressure in a fluid flow system caused by flow separation, vortex formation or abrupt closing of valve leads to cavitation (B) Cavitation may be caused due to boiling of liquid by decreasing the pressure resulting in formation & collapse of vapor cavities (C) Cavitation begins at higher static pressure and lower velocity in larger diameter pipelines resulting in audible noise(D) Large scale cavitation cannot damage pipeline, restrict fluid flow anddamage steam turbine blades

Description : Pick out the wrong statement about cavitation. (A) Sudden reduction of pressure in a fluid flow system caused by flow separation, vortex formation or abrupt closing of valve leads to cavitation ... (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades

Last Answer : (D) Large scale cavitation cannot damage pipeline, restrict fluid flow and damage steam turbine blades

Are there flow velocity restrictions to avoid static charge build up in pipelines?

Description : Are there flow velocity restrictions to avoid static charge build up in pipelines?

Last Answer : There is an Australian standard AS1020 (1984) - Control of undesirable Static Electricity In it, there is a table for flammable hydrocarbons as follows: Pipe Size (mm) Max Velocity (m/s) ... however be followed, such as appropriate earthing, and ensuring exit velocities into tanks of 1 m/s.

From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. (A) 5 (B) 50 (C) 500 (D) 5000

Description : From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. (A) 5 (B) 50 (C) 500 (D) 5000

Last Answer : (A) 5

Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million). (A) 0.002 (B) 0.2 (C) 1.2 (D) 4.8

Description : Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million). (A) 0.002 (B) 0.2 (C) 1.2 (D) 4.8

Last Answer : (B) 0.2

Maximum permissible residual chlorine in treated water should be __________ mg/litre. (A) 0.001 to 0.01 (B) 0.2 to 0.3 (C) 2 to 3 (D) 5 to 10

Description : Maximum permissible residual chlorine in treated water should be __________ mg/litre. (A) 0.001 to 0.01 (B) 0.2 to 0.3 (C) 2 to 3 (D) 5 to 10

Last Answer : (B) 0.2 to 0.3

In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by (A) 10 % (B) 20 % (C) 30 % (D) 40 %

Description : In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by (A) 10 % (B) 20 % (C) 30 % (D) 40 %

Last Answer : (D) 40 %

Maximum permissible turbidity in potable water is __________ ppm. (A) 1 (B) 10 (C) 250 (D) 1000

Description : Maximum permissible turbidity in potable water is __________ ppm. (A) 1 (B) 10 (C) 250 (D) 1000

Last Answer : (B) 10

Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm. (A) < 1 (B) 10-100 (C) 100-200 (D) 100-1000

Description : Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm. (A) < 1 (B) 10-100 (C) 100-200 (D) 100-1000

Last Answer : (A) < 1

Identification of pipelines carrying different liquids and gases is done by the __________ of the pipe(A) Diameter(B) Colour(C) Altitude(D) None of these.

Description : Identification of pipelines carrying different liquids and gases is done by the __________ of the pipe. (A) Diameter (B) Colour (C) Altitude (D) None of these

Last Answer : (B) Colour

__________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently. (A) Collar (B) Flanged (C) Bell and Spigot (D) Expansion

Description : __________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently. (A) Collar (B) Flanged (C) Bell and Spigot (D) Expansion

Last Answer : Option B

Maximum permissible velocity 1.5 m/sec, is adopted in drains A. With beds of rocks and gravels B. Lined with stones C. Both A. and B. D. Neither A. nor B.

Description : Maximum permissible velocity 1.5 m/sec, is adopted in drains A. With beds of rocks and gravels B. Lined with stones C. Both A. and B. D. Neither A. nor B.

Last Answer : ANS: C

Permissible speed of Turnout with 1 in 8.5 curved switches a. 40 kmph b. 25 kmph* c. 15 kmph d. 20 kmph

Description : Permissible speed of Turnout with 1 in 8.5 curved switches a. 40 kmph b. 25 kmph* c. 15 kmph d. 20 kmph

Last Answer : b. 25 kmph*

Maximum permissible colour for domestic water supplies, based on Cobalt scale, is (A) 5 P.P.M. (B) 10 P.P.M. (C) 15 P.P.M. (D) 20 P.P.M.

Description : Maximum permissible colour for domestic water supplies, based on Cobalt scale, is (A) 5 P.P.M. (B) 10 P.P.M. (C) 15 P.P.M. (D) 20 P.P.M.

Last Answer : (D) 20 P.P.M.

The maximum permissible colour for domestic supplies based on cobalt scale, is (A) 5 ppm (B) 10 ppm (C) 15 ppm (D) 20 ppm

Description : The maximum permissible colour for domestic supplies based on cobalt scale, is (A) 5 ppm (B) 10 ppm (C) 15 ppm (D) 20 ppm

Last Answer : (D) 20 ppm

Pick up the correct statement from the following: A. Maximum daily flow = 2 times the average daily flow B. Maximum daily flow = average daily flow C. Sewers are designed for minimum permissible velocity at minimum flow D. All the above

Description : Pick up the correct statement from the following: A. Maximum daily flow = 2 times the average daily flow B. Maximum daily flow = average daily flow C. Sewers are designed for minimum permissible velocity at minimum flow D. All the above

Last Answer : ANS: D

For the construction of cement concrete dams, the maximum permissible size of the aggregates, is (A) 40 mm (B) 50 mm (C) 60 mm (D) 70 mm

Description : For the construction of cement concrete dams, the maximum permissible size of the aggregates, is (A) 40 mm (B) 50 mm (C) 60 mm (D) 70 mm

Last Answer : Answer: Option A

As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 metres from the source of noise. (A) 110 (B) 85 (C) 60 (D) 45

Description : As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 metres from the source of noise. (A) 110 (B) 85 (C) 60 (D) 45

Last Answer : (B) 85

A short column 20 cm × 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm2 and 300 kg/cm2 , the Safe load on the column, should not exceed (A) 4120 kg (B) 41,200 kg (C) 412,000 kg (D) None of these

Description : A short column 20 cm 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm2 and 300 kg/cm2 , the Safe load on ... should not exceed (A) 4120 kg (B) 41,200 kg (C) 412,000 kg (D) None of these

Last Answer : Answer: Option B

Minimum permissible speed on high speed roads, is decided on the basis of (A) 15 percentile cumulative frequency (B) 20 percentile cumulative frequency (C) 30 percentile cumulative frequency (D) 40 percentile cumulative frequency

Description : Minimum permissible speed on high speed roads, is decided on the basis of (A) 15 percentile cumulative frequency (B) 20 percentile cumulative frequency (C) 30 percentile cumulative frequency (D) 40 percentile cumulative frequency

Last Answer : Answer: Option A

Permissible speed of Turnout with 1 in 12 curved switches a. 40 kmph* b. 25 kmph c. 15 kmph d. 20 kmph

Description : Permissible speed of Turnout with 1 in 12 curved switches a. 40 kmph* b. 25 kmph c. 15 kmph d. 20 kmph

Last Answer : a. 40 kmph*

Size range of polymer molecules varies from __________ metre. (A) 10 -2 to 10 -5 (B) 10 -4 to 10 -7 (C) 10 -1 to 10 -2 (D) 10 -8 to 10

Description : Size range of polymer molecules varies from __________ metre. (A) 10 -2 to 10 -5 (B) 10 -4 to 10 -7 (C) 10 -1 to 10 -2 (D) 10 -8 to 10

Last Answer : (A) 10 -2 to 10

Under Liberalised Remittance Scheme, PAN card need not be insisted upon for remittance made towards permissible current account transactions up to __________ A. USD 25,000 B. USD 20,000 C. USD 15,000 D. USD 10,000 E. None of the Above

Description : Under Liberalised Remittance Scheme, PAN card need not be insisted upon for remittance made towards permissible current account transactions up to __________ A. USD 25,000 B. USD 20,000 C. USD 15,000 D. USD 10,000 E. None of the Above

Last Answer : A. USD 25,000 Explanation: PAN card need not be insisted upon for remittance made towards permissible current account transactions up to USD 25,000 per financial year.

Maximum permissible sulphur content in steel is __________ percent. (A) 0.015 (B) 0.055 (C) 0.505 (D) 0.805

Description : Maximum permissible sulphur content in steel is __________ percent. (A) 0.015 (B) 0.055 (C) 0.505 (D) 0.805

Last Answer : (B) 0.055

In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux. (A) Total (B) Minimum (C) Operating (D) Maximum permissible

Description : In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux. (A) Total (B) Minimum (C) Operating (D) Maximum permissible

Last Answer : (A) Total

At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation. (A) Operating (B) Total (C) Minimum (D) Maximum permissible

Description : At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation. (A) Operating (B) Total (C) Minimum (D) Maximum permissible

Last Answer : (B) Total

Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels. (A) 35 (B) 75 (C) 95 (D) 105

Description : Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels. (A) 35 (B) 75 (C) 95 (D) 105

Last Answer : (B) 75

A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from __________ ppm. (A) 1000 to 2000 (B) 3000 to 6000 (C) 6000 to 9000 (D) 10000 to 100000

Description : A gas is termed as non-toxic, if its maximum permissible concentration (TLV) ranges from __________ ppm. (A) 1000 to 2000 (B) 3000 to 6000 (C) 6000 to 9000 (D) 10000 to 100000

Last Answer : (D) 10000 to 100000

The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about __________ decibels. (A) 60(B) 90 (C) 105 (D) 120

Description : The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about __________ decibels. (A) 60 (B) 90 (C) 105 (D) 120

Last Answer : (B) 90

Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre. (A) 22 (B) 42 (C) 332 (D) 1050

Description : Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre. (A) 22 (B) 42 (C) 332 (D) 1050

Last Answer : (B) 42

Maximum permissible limit of mercury in human blood is __________ micrograms/100 c.c. (A) 1 (B) 7 (C) 19 (D) 82

Description : Maximum permissible limit of mercury in human blood is __________ micrograms/100 c.c. (A) 1 (B) 7 (C) 19 (D) 82

Last Answer : (B) 7

Maximum permissible sulphur content in steel is __________ percent. (A) 0.015 (B) 0.055 (C) 0.505

Description : Maximum permissible sulphur content in steel is __________ percent. (A) 0.015 (B) 0.055 (C) 0.505

Last Answer : Option A

Maximum permissible sulphur content in steel is __________ percent. (A) 0.015 (B) 0.055 (C) 0.505 (D) 0.805

Description : Maximum permissible sulphur content in steel is __________ percent. (A) 0.015 (B) 0.055 (C) 0.505 (D) 0.805

Last Answer : Option A

The permissible color for domestic water supply is __________ ppm.(A) 1 (B) 20 (C) 100 (D) 1000

Description : The permissible color for domestic water supply is __________ ppm. (A) 1 (B) 20 (C) 100 (D) 1000

Last Answer : (B) 20

A Bingham fluid of viscosity μ = 10 Pa.s and yield stress, τ0 = 10 KPa, is shared between flat parallel plates separated by a distance of 10 -3 m. The top plate is moving with a velocity of 1 m/s. The shear stress on the plate is (A) 10 KPa (B) 20 KPa (C) 30 KPa (D) 40 KPa

Description : A Bingham fluid of viscosity μ = 10 Pa.s and yield stress, τ0 = 10 KPa, is shared between flat parallel plates separated by a distance of 10 -3 m. The top plate is moving with a velocity of 1 m/s. The shear stress on the plate is (A) 10 KPa (B) 20 KPa (C) 30 KPa (D) 40 KPa

Last Answer : (B) 20 KPa

Capacity of flight conveyor in tons/hr is given by (where, W & D = width and depth of flight respectively in metre V = speed of the conveyor, metre/second ρ = bulk density of material, kg/m3 ) (A) 3.6 W.D.V.ρ (B) 3.6 W.D.V (C) 3.6 W.V.ρ (D) 3.6 D.V.ρ

Description : Capacity of flight conveyor in tons/hr is given by (where, W & D = width and depth of flight respectively in metre V = speed of the conveyor, metre/second ρ = bulk density of material, kg/m3 ) (A) 3.6 W.D.V.ρ (B) 3.6 W.D.V (C) 3.6 W.V.ρ (D) 3.6 D.V.ρ

Last Answer : (A) 3.6 W.D.V.ρ

Critical speed of rotation, N (in rps - rotation per second) of a trammel is equal to (where, g = acceleration due to gravity = 9.81 m/sec 2 and, r = radius of trammel, metre.) (A) (1/2π). √(g/r) (B) (1/π). √(g/r) (C) ½ √(g/r) (D) 2π. √(g/r)

Description : Critical speed of rotation, N (in rps - rotation per second) of a trammel is equal to (where, g = acceleration due to gravity = 9.81 m/sec 2 and, r = radius of trammel, metre.) (A) (1/2π). √(g/r) (B) (1/π). √(g/r) (C) ½ √(g/r) (D) 2π. √(g/r)

Last Answer : (A) (1/2π). √(g/r)

The piston of a steam engine moves in S.H.M. The crank rotates at 180 r.p.m. and the stroke length is 2 metres. The linear velocity of the piston when it is at a distance of 1 metre from the centre is a.8.88 m/sec b.16.32 m/sec c.5.88 m/sec d.8.16 m/sec e.Zero

Description : The piston of a steam engine moves in S.H.M. The crank rotates at 180 r.p.m. and the stroke length is 2 metres. The linear velocity of the piston when it is at a distance of 1 metre from the centre is a.8.88 m/sec b.16.32 m/sec c.5.88 m/sec d.8.16 m/sec e.Zero

Last Answer : e. Zero

The self-cleansing velocity of water flowing through pipe lines, is A. 2 metres/sec B. 1 metre/sec C. 0.5 metre/sec D. 0.25 metre/sec

Description : The self-cleansing velocity of water flowing through pipe lines, is A. 2 metres/sec B. 1 metre/sec C. 0.5 metre/sec D. 0.25 metre/sec

Last Answer : ANS: A

In case of Venturimeter, friction losses are about __________ percent of maximum velocity head. (A) 2 (B) 8 (C) 12 (D) 20

Description : In case of Venturimeter, friction losses are about __________ percent of maximum velocity head. (A) 2 (B) 8 (C) 12 (D) 20

Last Answer : (A) 2

A water main 1 m in diameter contains a fluid having pressure 1 N/mm2. If the maximum permissible tensile stress in the metal is 20 N/mm2, th thickness of the metal required would be a) 2 cm b) 2.5cm c) 1 cm d) 0.5 cm

Description : A water main 1 m in diameter contains a fluid having pressure 1 N/mm2. If the maximum permissible tensile stress in the metal is 20 N/mm2, th thickness of the metal required would be a) 2 cm b) 2.5cm c) 1 cm d) 0.5 cm

Last Answer : b) 2.5cm

A rhombus shaped sheet with perimeter 40 and digonals are 12 cm is painted on bith sides at the rate of rs 5 per metre square. Find the cost of painting -Maths 9th

Description : A rhombus shaped sheet with perimeter 40 and digonals are 12 cm is painted on bith sides at the rate of rs 5 per metre square. Find the cost of painting -Maths 9th

Last Answer : Let ABCD be a rhombus, then AB=BC=CD=DA=x Perimeter of rhombus =40cm ⇒4x=40cm⇒x=10cm ∴AB=BC=CD=DA=10cm In △ABC,S=2a+b+c​=210+10+12​=16cm ar△ABC=16(16−10)(16−10)(16−12)​=16×6×6×4​=48cm2ar.ABCD=2×48=96cm2 Cost of painting the sheet =Rs(5×96×2)=Rs960 [Both sides]

A rhombus shaped sheet with perimeter 40 and digonals are 12 cm is painted on bith sides at the rate of rs 5 per metre square. Find the cost of painting -Maths 9th

Description : A rhombus shaped sheet with perimeter 40 and digonals are 12 cm is painted on bith sides at the rate of rs 5 per metre square. Find the cost of painting -Maths 9th

Last Answer : Let ABCD be a rhombus, then AB=BC=CD=DA=x Perimeter of rhombus =40cm ⇒4x=40cm⇒x=10cm ∴AB=BC=CD=DA=10cm In △ABC,S=2a+b+c​=210+10+12​=16cm ar△ABC=16(16−10)(16−10)(16−12)​=16×6×6×4​=48cm2ar.ABCD=2×48=96cm2 Cost of painting the sheet =Rs(5×96×2)=Rs960 [Both sides]

A shaft 9 m long is subjected to a torque 30 t-m at a point 3 m distant from either end. The reactive torque at the nearer end will be (A) 5 tonnes metre (B) 10 tonnes metre (C) 15 tonnes metre (D) 20 tonnes metre

Description : A shaft 9 m long is subjected to a torque 30 t-m at a point 3 m distant from either end. The reactive torque at the nearer end will be (A) 5 tonnes metre (B) 10 tonnes metre (C) 15 tonnes metre (D) 20 tonnes metre

Last Answer : (D) 20 tonnes metre

Requirement of water for apron washing a. 5 litre per square metre per day b. 10 litre per square metre per day * c. 15 litre per square metre per day d. 20 litre per square metre per day

Description : Requirement of water for apron washing a. 5 litre per square metre per day b. 10 litre per square metre per day * c. 15 litre per square metre per day d. 20 litre per square metre per day

Last Answer : b. 10 litre per square metre per day *

Requirement of water for platform washing is a)5 litre per square metre per day * b)10 litre per square meter per day c) 15 litre per square metre per day d)20 litre per square metre per day

Description : Requirement of water for platform washing is a)5 litre per square metre per day * b)10 litre per square meter per day c) 15 litre per square metre per day d)20 litre per square metre per day

Last Answer : a)5 litre per square metre per day *