10. If the value of coefficient of discharge increases, the discharge through the orifice decreases. A) True B) False

10. If the value of coefficient of discharge increases, the discharge through the orifice decreases.
A) True
B) False
by

1 Answer

Answer :

B
by

Related questions

20. The coefficient of discharge is the ratio of theoretical discharge to the actual discharge through an orifice. A) True B) False

Description : 20. The coefficient of discharge is the ratio of theoretical discharge to the actual discharge through an orifice. A) True B) False

Last Answer : B

The value of coefficient of velocity for a sharp edged orifice __________ with the head of water. (A) Decreases (B) Increases (C) Remain same (D) None of these

Description : The value of coefficient of velocity for a sharp edged orifice __________ with the head of water. (A) Decreases (B) Increases (C) Remain same (D) None of these

Last Answer : Answer: Option B

Coefficient of resistance is the ratio of (A) Actual velocity of jet at vena-contracta to the theoretical velocity (B) Area of jet at vena-contracta to the area of orifice (C) Loss of head in the orifice to the head of water available at the exit of the orifice (D) Actual discharge through an orifice to the theoretical discharge

Description : Coefficient of resistance is the ratio of (A) Actual velocity of jet at vena-contracta to the theoretical velocity (B) Area of jet at vena-contracta to the area of orifice (C) Loss ... available at the exit of the orifice (D) Actual discharge through an orifice to the theoretical discharge

Last Answer : Answer: Option C

The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of discharge) (A) Q = (2/3) Cd × b × (2g) × (H2 - H1) (B) Q = (2/3) Cd × b × (2g) × (H2 1/2 - H1 1/2) (C) Q = (2/3) Cd × b × (2g) × (H2 3/2 - H1 3/2) (D) Q = (2/3) Cd × b × (2g) × (H2 2 - H1 2 )

Description : The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice, and Cd = Coefficient of ... H1 3/2) (D) Q = (2/3) Cd b (2g) (H2 2 - H1 2 )

Last Answer : Answer: Option C

Coefficient of velocity is defined as the ratio of (A) Actual velocity of jet at vena contracta to the theoretical velocity (B) Area of jet at vena contracta to the area of orifice (C) Actual discharge through an orifice to the theoretical discharge (D) None of the above

Description : Coefficient of velocity is defined as the ratio of (A) Actual velocity of jet at vena contracta to the theoretical velocity (B) Area of jet at vena contracta to the area of orifice (C) Actual discharge through an orifice to the theoretical discharge (D) None of the above

Last Answer : Answer: Option A

Consider the following devices : 1. Orifice 2. Borda’s mouthpiece running free 3. Bell mouthed orifice 4. External mouthpiece What is the correct sequence of these devices by decreasing magnitude of coefficient of discharge? a) 2, 3, 1 and 4 b) 4, 3, 1 and 2 c) 4, 1, 3 and 2 d) 2, 1, 3 and 4

Description : Consider the following devices : 1. Orifice 2. Borda’s mouthpiece running free 3. Bell mouthed orifice 4. External mouthpiece What is the correct sequence of these devices by decreasing magnitude of coefficient of discharge? a) 2, 3, 1 and 4 b) 4, 3, 1 and 2 c) 4, 1, 3 and 2 d) 2, 1, 3 and 4

Last Answer : b) 4, 3, 1 and 2

The coefficient of viscosity may be determined by (A) Capillary tube method (B) Orifice type viscometer (C) Rotating cylinder method (D) All of these

Description : The coefficient of viscosity may be determined by (A) Capillary tube method (B) Orifice type viscometer (C) Rotating cylinder method (D) All of these

Last Answer : Answer: Option D

Coefficient of contraction is the ratio of (A) Actual velocity of jet at vena contracta to the theoretical velocity (B) Loss of head in the orifice to the head of water available at the exit of the orifice (C) Loss of head in the orifice to the head of water available at the exit of the orifice (D) Area of jet at vena-contracta to the area of orifice

Description : Coefficient of contraction is the ratio of (A) Actual velocity of jet at vena contracta to the theoretical velocity (B) Loss of head in the orifice to the head of water available at the exit of the ... available at the exit of the orifice (D) Area of jet at vena-contracta to the area of orifice

Last Answer : Answer: Option D

A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is (A) 0.46 (B) 0.64 (C) 0.78 (D) 0.87

Description : A jet of water discharging from a 40 mm diameter orifice has a diameter of 32 mm at its vena contracta. The coefficient of contraction is (A) 0.46 (B) 0.64 (C) 0.78 (D) 0.87

Last Answer : Answer: Option B

What is the value of co-efficient of discharge for square edged circular orifice (for β = 0.3 to 0.5)? (A) 0.61 - 0.63(B) 0.5 - 0.75 (C) 0.75 - 0.90 (D) 0.35 - 0.55

Description : What is the value of co-efficient of discharge for square edged circular orifice (for β = 0.3 to 0.5)? (A) 0.61 - 0.63 (B) 0.5 - 0.75 (C) 0.75 - 0.90 (D) 0.35 - 0.55

Last Answer : (A) 0.61 - 0.63

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)

With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost (A) Increases(B) Decreases(C) Remains unchanged(D) Increases exponentially

Description : With increase in the ratio of orifice diameter to pipe diameter, the fraction of the orifice pressure differential that is permanently lost (A) Increases (B) Decreases (C) Remains unchanged (D) Increases exponentially

Last Answer : (B) Decreases

With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss (A) Decreases (B) Increases (C) Remain constant (D) Increases linearly

Description : With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss (A) Decreases (B) Increases (C) Remain constant (D) Increases linearly

Last Answer : (C) Remain constant

Cd , Cc and Cv are related (for flow through an orifice) as (where, Cd = discharge co-efficient, Cc = co-efficient of contraction = (area of jet at vena￾contracta/area of opening), Cv = co-efficient of velocity = (actual velocity at vena-contracta/theoretical velocity). (A) Cd = Cc /Cv (B) Cd = Cc .Cv (C) Cd = Cv / Cc (D) None of these

Description : Cd , Cc and Cv are related (for flow through an orifice) as (where, Cd = discharge co-efficient, Cc = co-efficient of contraction = (area of jet at vena￾contracta/area of opening), Cv = co-efficient of velocity = (actual velocity ... A) Cd = Cc /Cv (B) Cd = Cc .Cv (C) Cd = Cv / Cc (D) None of these

Last Answer : (B) Cd = Cc .Cv

Derive equation for discharge through orifice meter with the help of neat sketch.

Description : Derive equation for discharge through orifice meter with the help of neat sketch.

Last Answer : Orifice Meter or orifice Plate: It is a device used for measuring the rate of flow of a fluid through a pipe. It is Cheaper device as compared to venturimeter. It also works on the same ... a distance of about half the diameter of the orifice on the downstream side from the orifice plate. 

The value of coefficient of discharge is __________ the value of coefficient of velocity. (A) Less than (B) Same as (C) More than (D) None of these

Description : The value of coefficient of discharge is __________ the value of coefficient of velocity. (A) Less than (B) Same as (C) More than (D) None of these

Last Answer : Answer: Option A

Due to a rise in temperature, the viscosity and the unit weight of the percolating fluid are reduced to 60% and 90% respectively. If other things remain constant, the coefficient of permeability (A) Increases by 25 % (B) Increases by 50 % (C) Increases by 33.3 % (D) Decreases by 33.3 %

Description : Due to a rise in temperature, the viscosity and the unit weight of the percolating fluid are reduced to 60% and 90% respectively. If other things remain constant, the coefficient of permeability (A) Increases by 25 % (B) Increases by 50 % (C) Increases by 33.3 % (D) Decreases by 33.3 %

Last Answer : (B) Increases by 50 %

Coefficient of consolidation for clays normally (A) Decreases with increase in liquid limit (B) Increases with increase in liquid limit (C) First increases and then decreases with increase in liquid limit (D) Remains constant at all liquid limits

Description : Coefficient of consolidation for clays normally (A) Decreases with increase in liquid limit (B) Increases with increase in liquid limit (C) First increases and then decreases with increase in liquid limit (D) Remains constant at all liquid limits

Last Answer : (A) Decreases with increase in liquid limit

The discharge co-efficient for an orifice meter does not depend upon the (A) Pipe length (B) Ratio of pipe diameter to orifice diameter (C) Type of orifice & the Reynolds number (D) Pipe diameter

Description : The discharge co-efficient for an orifice meter does not depend upon the (A) Pipe length (B) Ratio of pipe diameter to orifice diameter (C) Type of orifice & the Reynolds number (D) Pipe diameter

Last Answer : (A) Pipe length

Co-efficient of discharge (Cd ) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv ; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about (A) 0.42 (B) 0.62 (C) 0.82 (D) 0.98

Description : Co-efficient of discharge (Cd ) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv ; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about (A) 0.42 (B) 0.62 (C) 0.82 (D) 0.98

Last Answer : (B) 0.62

Co-efficient of discharge (Cd ) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv ; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about (A) 0.42 (B) 0.62 (C) 0.82 (D) 0.98

Description : Co-efficient of discharge (Cd ) is defined as actual discharge/theoretical discharge and is equal to Cc . Cv ; where Cc = Co-efficient of contraction and Cv = co-efficient of velocity. Cd of an orifice is usually about (A) 0.42 (B) 0.62 (C) 0.82 (D) 0.98

Last Answer : (B) 0.62

S1 and S2 are the draw downs in an observation well at times t1 and t2 after pumping. For discharge Q and coefficient of transmissibility T, the relationship, is (A) S2 - S1 = (2.3Q/ ) log10 (t2/t1) (B) S2 - S1 = (2.3Q/4 ) log10 (t2/t1) (C) S2 - S1 = (2.3Q/4 ) loge (t2/t1) (D) S2 - S1 = (2.3Q/4 ) loge (t1/t2

Description : S1 and S2 are the draw downs in an observation well at times t1 and t2 after pumping. For  discharge Q and coefficient of transmissibility T, the relationship, is  (A) S2 - S1 = (2.3Q/ ) log10 (t2/t1)  (B) S2 - S1 ... - S1 = (2.3Q/4 ) loge (t2/t1)  (D) S2 - S1 = (2.3Q/4 ) loge (t1/t2

Last Answer : (B) S2 - S1 = (2.3Q/4 ) log10 (t2/t1) 

Coefficient of discharge of an ogee spillway (A) Depends on depth of approach and upstream slope (B) Depends on downstream apron interference and downstream submergence (C) Remains constant (D) Both (A) and (B

Description : Coefficient of discharge of an ogee spillway (A) Depends on depth of approach and upstream slope (B) Depends on downstream apron interference and downstream submergence (C) Remains constant (D) Both (A) and (B

Last Answer : Answer: Option D

09. According to Bazin, the coefficient of discharge varies with the height of water over the sill of a weir. A) Correct B) Incorrect

Description : 09. According to Bazin, the coefficient of discharge varies with the height of water over the sill of a weir. A) Correct B) Incorrect

Last Answer : A

The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece. (A) Less than (B) More than (C) Equal to (D) None of these

Description : The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece. (A) Less than (B) More than (C) Equal to (D) None of these

Last Answer : Answer: Option A

The coefficient of discharge for an external mouthpiece is (A) 0.375 (B) 0.5 (C) 0.707 (D) 0.855

Description : The coefficient of discharge for an external mouthpiece is (A) 0.375 (B) 0.5 (C) 0.707 (D) 0.855

Last Answer : Answer: Option D

If the coefficient of discharge is 0.6, then the discharge over a right angled notch is (A) 0.417 H 5/2 (B) 1.417 H 5/2 (C) 4.171 H 5/2 (D) 7.141 H 5/2

Description : If the coefficient of discharge is 0.6, then the discharge over a right angled notch is (A) 0.417 H 5/2 (B) 1.417 H 5/2 (C) 4.171 H 5/2 (D) 7.141 H 5/2

Last Answer : Answer: Option B

The coefficient of discharge for an external mouthpiece depends upon (A) Velocity of liquid (B) Pressure of liquid (C) Area of mouthpiece (D) Length of mouthpiece

Description : The coefficient of discharge for an external mouthpiece depends upon (A) Velocity of liquid (B) Pressure of liquid (C) Area of mouthpiece (D) Length of mouthpiece

Last Answer : Answer: Option D

Coefficient of discharge Cd is equal to (where Cc = Coefficient of contraction, Cv = Coefficient of velocity, and Cr = Coefficient of resistance) (A) Cc × Cv (B) Cc × Cr (C) Cv × Cr (D) Cc /Cr

Description : Coefficient of discharge Cd is equal to (where Cc = Coefficient of contraction, Cv = Coefficient of velocity, and Cr = Coefficient of resistance) (A) Cc × Cv (B) Cc × Cr (C) Cv × Cr (D) Cc /Cr

Last Answer : Answer: Option A

When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is (A) 1.84(L - 0.1nH)H 3/2 (B) 1.84(L - nH)H 2 (C) 1.84(L - 0.1nH)H 5/2 (D) 1.84(L - nH)H 3

Description : When the coefficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is (A) 1.84(L - 0.1nH)H 3/2 (B) 1.84(L - nH)H 2 (C) 1.84(L - 0.1nH)H 5/2 (D) 1.84(L - nH)H 3

Last Answer : Answer: Option A

If the discharge of a centrifugal pump is throttled, then its suction lift (A) Increases (B) Decreases (C) Remains unchanged (D) Data insufficient to predict

Description : If the discharge of a centrifugal pump is throttled, then its suction lift (A) Increases (B) Decreases (C) Remains unchanged (D) Data insufficient to predict

Last Answer : (A) Increases

Air vessel fitted to a reciprocating pump (A) Increases the work done (B) Decreases the work done (C) Causes cavitation (D) Results in non-uniform discharge

Description : Air vessel fitted to a reciprocating pump (A) Increases the work done (B) Decreases the work done (C) Causes cavitation (D) Results in non-uniform discharge

Last Answer : (B) Decreases the work done

When temperature rises, resistance of negative temperature coefficient thermistor A. increases B. decreases C. zero D. infinity

Description : When temperature rises, resistance of negative temperature coefficient thermistor A. increases B. decreases C. zero D. infinity

Last Answer : decreases

In an oil-lubricated journal bearing, coefficient of friction between the journal and the bearing. [IES-1995] (a) Remains constant at all speeds. (b) is minimum at zero speed and increases monotonically with increase in speed. (c) is maximum at zero speed and decreases monotonically with increase in speed. (d) becomes minimum at an optimum speed and then increases with further increase in speed.

Description : In an oil-lubricated journal bearing, coefficient of friction between the journal and the bearing. [IES-1995] (a) Remains constant at all speeds. (b) is minimum at zero speed and increases ... speed. (d) becomes minimum at an optimum speed and then increases with further increase in speed.

Last Answer : (d) becomes minimum at an optimum speed and then increases with further increase in speed.

Efficiency of the screw _______ with increase of coefficient of friction. a) decreases b) increases c) has no effect d) cannot be determined

Description : Efficiency of the screw _______ with increase of coefficient of friction. a) decreases b) increases c) has no effect d) cannot be determined

Last Answer : a) decreases

For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it (A) Decreases the pressure drop (B) Decreases the outlet temperature of cooling medium (C) Increases the overall heat transfer coefficient (D) None of these

Description : For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it (A) Decreases the pressure drop (B) ... the outlet temperature of cooling medium (C) Increases the overall heat transfer coefficient (D) None of these

Last Answer : (C) Increases the overall heat transfer coefficient

14. The velocity of liquid flowing through an orifice varies with the available head of the liquid. A) Agree B) Disagree

Description : 14. The velocity of liquid flowing through an orifice varies with the available head of the liquid. A) Agree B) Disagree

Last Answer : A

Pick up the correct statement from the following: (A) At a particular speed of operation, the head produced decreases with the increase of discharge (B) At zero discharge, discharge valve remaining closed, the head developed is maximum which is known as shut-off head (C) At a particular speed the discharge at which efficiency of a pump is maximum, is known as normal discharge (D) All the above

Description : Pick up the correct statement from the following: (A) At a particular speed of operation, the head produced decreases with the increase of discharge (B) At zero discharge, discharge valve remaining closed ... which efficiency of a pump is maximum, is known as normal discharge (D) All the above

Last Answer : (D) All the above

The void ratio of a soil sample decreases from 1.50 to 1.25 when the pressure is increased from 25 tonnes/m2 to 50 tonnes/m2 , the coefficient of compressibility is (A) 0.01 (B) 0.02 (C) 0.05 (D) 0.001

Description : The void ratio of a soil sample decreases from 1.50 to 1.25 when the pressure is increased from 25 tonnes/m2 to 50 tonnes/m2 , the coefficient of compressibility is (A) 0.01 (B) 0.02 (C) 0.05 (D) 0.001

Last Answer : (A) 0.01

Pick up the correct statement from the following: (A) When stress decreases, void, ratio decreases (B) When stress decreases, coefficient of permeability decreases (C) When stress decreases, coefficient of volume change decreases (D) When stress decreases void ratio, coefficients of permeability and volume change decrease

Description : Pick up the correct statement from the following: (A) When stress decreases, void, ratio decreases (B) When stress decreases, coefficient of permeability decreases (C) When stress ... change decreases (D) When stress decreases void ratio, coefficients of permeability and volume change decrease

Last Answer : Answer: Option D

For a given Reynold number as d/D for an orifice increases, Cd will (where, d & D are orifice & pipe diameters respectively). (A) Increase (B) Decrease (C) Remain constant (D) Either (A) or (B); depends on other factors

Description : For a given Reynold number as d/D for an orifice increases, Cd will (where, d & D are orifice & pipe diameters respectively). (A) Increase (B) Decrease (C) Remain constant (D) Either (A) or (B); depends on other factors

Last Answer : (A) Increase

With increase in moisture content, the bulking of sand (A) Increases (B) Decreases (C) First increases to a certain maximum value and then decreases (D) First decreases to a certain minimum value and then increases

Description : With increase in moisture content, the bulking of sand (A) Increases (B) Decreases (C) First increases to a certain maximum value and then decreases (D) First decreases to a certain minimum value and then increases

Last Answer : Answer: Option C

Co-efficient of velocity is __________ the coefficient of discharge. (A) Less than (B) More than (C) Equal to (D) Not related to

Description : Co-efficient of velocity is __________ the coefficient of discharge. (A) Less than (B) More than (C) Equal to (D) Not related to

Last Answer : (B) More than

A control meter is preferred to a weir because (A) It measures the discharge even in silt Leiden streams (B) The velocity of approach of the channel increases above the control, and thus removes the silt completely (C) It is not damaged by floating debris (D) All the above

Description : A control meter is preferred to a weir because (A) It measures the discharge even in silt Leiden streams (B) The velocity of approach of the channel increases above the control, and thus removes the silt completely (C) It is not damaged by floating debris (D) All the above

Last Answer : Answer: Option D

The velocity of the liquid flowing through the divergent portion of a Venturimeter (A) Remains constant (B) Increases (C) Decreases (D) Depends upon mass of liquid

Description : The velocity of the liquid flowing through the divergent portion of a Venturimeter (A) Remains constant (B) Increases (C) Decreases (D) Depends upon mass of liquid

Last Answer : Answer: Option C

The pressure of the liquid flowing through the divergent portion of a Venturimeter (A) Remains constant (B) Increases (C) Decreases (D) Depends upon mass of liquid

Description : The pressure of the liquid flowing through the divergent portion of a Venturimeter (A) Remains constant (B) Increases (C) Decreases (D) Depends upon mass of liquid

Last Answer : Answer: Option C

Coefficient of permeability of soil (A) Does not depend upon temperature (B) Increases with the increase in temperature (C) Increases with the decrease in temperature (D) None of the above

Description : Coefficient of permeability of soil (A) Does not depend upon temperature (B) Increases with the increase in temperature (C) Increases with the decrease in temperature (D) None of the above

Last Answer : Answer: Option B

The torque and current curves for a three-phase induction motor with a cage rotor, are shown in the illustration. Which of the following statements is true concerning the depicted curves? EL-0056 A. As slip increases, rotor reactance decreases. B. The pullout point on the torque curve is about seven times the normal full load torque value. C. At stand still, stator current is 150% of normal. D. If the motor is loaded to the point where 40% slip has resulted, it will stall.

Description : The torque and current curves for a three-phase induction motor with a cage rotor, are shown in the illustration. Which of the following statements is true concerning the depicted curves? EL-0056 A. As slip ... D. If the motor is loaded to the point where 40% slip has resulted, it will stall.

Last Answer : Answer: D

The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to (A) 2100 (B) 2700 (C) 10,000 (D) 21,000

Description : The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to (A) 2100 (B) 2700 (C) 10,000 (D) 21,000

Last Answer : Answer: Option D

A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a (A) Notch (B) Weir (C) Mouthpiece (D) Nozzle

Description : A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a (A) Notch (B) Weir (C) Mouthpiece (D) Nozzle

Last Answer : Answer: Option C