Quiz For 2nd Yr
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For quality control of portland cement the test essentially done is......
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Setting time
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Soundness
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Tensile strength
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All the above
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About This Quiz
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- 2.
Wp and wf are the weigths of cylinder containing partially compacted and fully compacted concrete.if the compaction factor (wp/wf) is 0.95 the workablity of concrete is.....
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extremely low
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very low
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Low
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High
Correct Answer
A. HighExplanation
If the compaction factor (wp/wf) is 0.95, it means that the weight of the partially compacted concrete is 95% of the weight of the fully compacted concrete. This suggests that the concrete is highly workable, as it can be easily compacted and molded into shape. Therefore, the workability of the concrete is high.Rate this question:
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- 3.
The pitot tube is used to measure........
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Velocity at stagnation point
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Stagnation pressure
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Static pressure
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Dynamic pressure
Correct Answer
A. Stagnation pressureExplanation
The pitot tube is a device used to measure the stagnation pressure of a fluid flow. Stagnation pressure is the pressure exerted by a fluid when it comes to a stop or stagnates. The pitot tube is designed in such a way that it can measure this pressure accurately. It consists of a small opening facing the flow, which allows the fluid to enter the tube. The stagnation pressure is measured by comparing the pressure inside the tube with the ambient pressure. By measuring the stagnation pressure, the pitot tube can provide valuable information about the velocity and energy of the fluid flow.Rate this question:
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- 4.
The hardest rock is
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Marble
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Diamond
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Talc
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Quartz
Correct Answer
A. DiamondExplanation
Diamond is the hardest rock because it is composed of carbon atoms arranged in a crystal lattice structure, which gives it its exceptional hardness. The strong covalent bonds between the carbon atoms make diamond resistant to scratching and abrasion, making it the hardest known natural material. Diamond is widely used in various industries, including jewelry, cutting tools, and industrial applications that require a highly durable and scratch-resistant material.Rate this question:
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- 5.
Wrough iron contains carbon upto
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0.25%
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1.0%
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1.5%
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2%
Correct Answer
A. 0.25%Explanation
Wrought iron is a type of iron that has a very low carbon content, typically ranging from 0.02% to 0.08%. This makes it more malleable and ductile compared to other types of iron. The given answer of 0.25% falls within this range, indicating that it is a correct statement.Rate this question:
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- 6.
Size of theodolite is specified by
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A)the length of telescope
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B)the diameter of vertical circle
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C)the diameter of lower plate
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D)the diameter of upper plate
Correct Answer
A. C)the diameter of lower plateExplanation
The size of a theodolite is specified by the diameter of the lower plate. The lower plate is an important component of the theodolite, as it provides stability and support for the instrument. A larger diameter allows for a more stable base, which is crucial for accurate measurements. Additionally, a larger lower plate diameter also allows for smoother movements and easier rotation of the theodolite, making it more user-friendly. Therefore, the diameter of the lower plate is a key factor in determining the size and functionality of a theodolite.Rate this question:
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- 7.
In the manfacture of cement the dry or wet mixture of calcareous and argillaceous material is burnt at a temperature between......
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A)900-1000 degree celcius
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B)1000-1200 degree celcius
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C) 1200-1500 degree celcius
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D) 1500-1600 degree celcius
Correct Answer
A. D) 1500-1600 degree celciusExplanation
The correct answer is d) 1500-1600 degree Celsius. In the manufacture of cement, the calcareous and argillaceous materials are mixed together and then burned at a high temperature. This high temperature is necessary to initiate chemical reactions that result in the formation of cement clinker. The temperature range of 1500-1600 degree Celsius ensures that the materials are properly heated to achieve the desired chemical reactions and the formation of cement clinker.Rate this question:
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- 8.
A open tank contains 1m deep water with 50m depth of oil of specific gravity 0.8 above it. the intensity of pressure at the bottom of tank will be ........
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A)4 kN/m2
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B) 10 kN/m2
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C)12 kN/m2
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14 kN/m2
Correct Answer
A. 14 kN/m2Explanation
The intensity of pressure at the bottom of the tank can be calculated by considering the pressure due to the water and the pressure due to the oil separately. The pressure due to the water can be calculated using the formula P = ρgh, where ρ is the density of water, g is the acceleration due to gravity, and h is the height of the water column. The pressure due to the oil can be calculated using the formula P = ρgh, where ρ is the density of the oil, g is the acceleration due to gravity, and h is the height of the oil column. Adding these two pressures together, we get the total pressure at the bottom of the tank. In this case, the specific gravity of the oil is given as 0.8, which means that its density is 0.8 times the density of water. Therefore, the pressure due to the oil will be 0.8 times the pressure due to the water. Adding these two pressures together, we find that the total pressure at the bottom of the tank is 14 kN/m2.Rate this question:
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- 9.
The compressive of granite is .........
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A)50-70 MN/m2
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B) 70-130 MN/m2
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C) 130-170 MN/m2
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D) 170-200 MN/m2
Correct Answer
A. B) 70-130 MN/m2Explanation
The compressive strength of granite is typically in the range of 70-130 MN/m2. This means that granite can withstand a significant amount of compressive force before it starts to deform or break. The wide range of values is due to the natural variation in the composition and structure of different types of granite.Rate this question:
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- 10.
Which one of the following is used to measure the discharge.........
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A)currentmeter
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B)venturimeter
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C)pitot tube
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D)hot wire anemometer
Correct Answer
A. B)venturimeterExplanation
A venturimeter is used to measure the discharge of a fluid flow. It is a device that consists of a converging section, a throat, and a diverging section. The fluid flowing through the venturimeter causes a pressure drop at the throat, which can be measured to determine the flow rate. This makes the venturimeter an effective tool for measuring the discharge of fluids in various applications, such as in pipelines or in hydraulic systems.Rate this question:
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- 11.
Maximum bending moment in a beam occurs where.......
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A) deflection is zero
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B) shear force is max
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C)shear force is zero
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D) shear force changes sign
Correct Answer
A. C)shear force is zeroExplanation
The maximum bending moment in a beam occurs where the shear force is zero. This is because the bending moment is directly related to the rate of change of the shear force along the length of the beam. When the shear force is zero, it means that there is no change in the shear force, and therefore, the bending moment is at its maximum value.Rate this question:
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- 12.
For the design of a cast iron member the most appropriate theory of failure is.....
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A)Mohr's theory
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B) Rankine's theory
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C)max strain theory
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D)max shear energy theory
Correct Answer
A. B) Rankine's theoryExplanation
Rankine's theory is the most appropriate theory of failure for the design of a cast iron member. This theory takes into account both the tensile and compressive strengths of the material, making it suitable for cast iron which is a brittle material. It assumes that failure occurs when the maximum principal stress reaches the tensile strength of the material. This theory is widely used in the design of cast iron structures as it provides a conservative estimate of the material's strength and ensures safety.Rate this question:
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- 13.
For line AB.............
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A) the forebearing of AB and backbearing of AB differ by 180 degree
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B)the forebearing of AB and BB of BA differ by 180 degree
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C) both a and b correct
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D) none is correct
Correct Answer
A. A) the forebearing of AB and backbearing of AB differ by 180 degreeExplanation
The forebearing of a line represents the direction in which the line is measured from the starting point to the ending point. The backbearing, on the other hand, represents the direction in which the line is measured from the ending point to the starting point. Since the forebearing and backbearing are measured in opposite directions, they will always differ by 180 degrees. Therefore, option a) is correct.Rate this question:
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- 14.
Pascal's-second is the unit of ..........
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A) pressure
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B)kinematic viscosity
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C) dynamic viscosity
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D)surface tension
Correct Answer
A. C) dynamic viscosityExplanation
Pascal's-second is the unit of dynamic viscosity. Dynamic viscosity is a measure of a fluid's resistance to flow when subjected to an applied force or stress. It represents the internal friction within the fluid as it flows. Pascal's-second is the SI unit for dynamic viscosity and is defined as the force required to move a unit area of fluid at a unit velocity. Therefore, the correct answer is c) dynamic viscosity.Rate this question:
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- 15.
The shear stress on a principle plane is................
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A)zero
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B)maximum
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C)minimum
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D)none of these
Correct Answer
A. A)zeroExplanation
The shear stress on a principle plane is zero because principle planes are oriented in a way that the shear stress is minimized or eliminated. These planes are aligned with the maximum and minimum normal stresses, resulting in zero shear stress.Rate this question:
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- 16.
The sum of the normal stress is.................
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A)constant
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B)variable
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C)depending on the plane
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D)none of the above
Correct Answer
A. A)constantExplanation
The sum of the normal stress is constant because normal stress is the force per unit area acting perpendicular to the plane. In a system where the forces and areas remain constant, the normal stress will also remain constant. This means that regardless of the orientation or position of the plane, the sum of the normal stress will not change.Rate this question:
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- 17.
Initial setting time of cement is due to..............
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A) Tri-calcium silicate
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B)di-calcium silicate
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C) tri-calcium aluminate
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D)tetra calcium alumino ferrite
Correct Answer
A. C) tri-calcium aluminateExplanation
The initial setting time of cement is due to the presence of tri-calcium aluminate. Tri-calcium aluminate is responsible for the early hydration process in cement, which leads to the formation of a solid matrix. This process determines the initial setting time, which is the time it takes for the cement to harden and gain its initial strength.Rate this question:
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- 18.
If the young's modulus of elasticity of a material is twic its modulus of rigidity.the poission's ratio of the material is...................
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A) -1
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B) -0.5
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C) 0.5
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D)zero
Correct Answer
A. D)zeroExplanation
If the Young's modulus of elasticity of a material is twice its modulus of rigidity, it indicates that the material is perfectly rigid. In a perfectly rigid material, there is no lateral deformation or change in shape when subjected to an external force. This means that the material does not experience any transverse strain, which is the definition of Poisson's ratio. Therefore, the Poisson's ratio of the material would be zero.Rate this question:
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- 19.
For a well defined triangle no angle should be less than the..................
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A)20 degree
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B) 30 degree
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C) 45 degree
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D) 60 degree
Correct Answer
A. B) 30 degreeExplanation
For a well-defined triangle, no angle should be less than 30 degrees. This is because the sum of the angles in a triangle is always 180 degrees. If any angle is less than 30 degrees, then the sum of the other two angles would have to be greater than 150 degrees, which is not possible in a triangle. Therefore, 30 degrees is the minimum angle that a well-defined triangle can have.Rate this question:
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- 20.
The correction for Sag is
Correct Answer
always subtractive,negativeExplanation
The correction for Sag is always subtractive and negative. This means that when correcting for sag, we need to subtract a certain amount from the measured value. Additionally, the correction will always result in a negative value. This suggests that sag is a downward deviation from the expected or desired value, and the correction involves reducing this deviation.Rate this question:
- 21.
Find the number of odd days in a decade..........................
Correct Answer
cannot be determined - 22.
A man walks 10 km towards north. from there he walks 6km towards south and then he walks 3km towards east. how far with he from the reference point
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A) 3 km
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B) 5 km
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C) 4 km
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D) 2 km
Correct Answer
A. B) 5 kmExplanation
The man initially walks 10 km towards the north. Then, he walks 6 km towards the south, which cancels out a portion of the distance he covered in the north direction. Finally, he walks 3 km towards the east, which does not affect the distance from the reference point. Therefore, the man is 5 km away from the reference point.Rate this question:
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- 23.
Rama told lakshmana," yesterday, I met the only brother of the daughter of my grandmother." Whom did Rama meet?
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A) uncle
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B) father
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C) father-in-law
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D) either a or b
Correct Answer
A. D) either a or bExplanation
Rama met either his uncle or his father. The statement implies that the person Rama met is a male relative who is either his uncle or his father.Rate this question:
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- 24.
The last day of a century cannot be a................
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A) Monday
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B) Tuesday
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C) Wednesday
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D) Friday
Correct Answer
A. B) TuesdayExplanation
The explanation for the correct answer is that a century consists of 100 years. Each year has 365 days, except for leap years which have 366 days. Therefore, the last day of a century would be the 365th day or the 366th day in a leap year. Since 365 is not divisible by 7, it would not align with any specific day of the week. Therefore, it is not possible for the last day of a century to be a specific day like Tuesday.Rate this question:
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- 25.
Pointing to a photo, Mr.Bean said: I have n brother and sister but that fellow's father is my father's son. whose photo is it?
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A) His son's
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B) His nephew's
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C) His father's
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D) His uncle's
Correct Answer
A. A) His son'sExplanation
The photo is of Mr. Bean's son. Mr. Bean states that the person in the photo is his father's son, which means it is his own son.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
Sep 11, 2016Quiz Created by
Tyrotur
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