KEC International Post Graduate Trainee Interview Questions and Answers

The yield strength of 8mm dia steel of 550 grade can be found using standard testing methods.

• Yield strength is the maximum stress a material can withstand without permanent deformation

• Standard testing methods like tensile testing can be used to determine the yield strength

• The 550 grade refers to the minimum yield strength of the steel

• Consulting the material's specification or conducting tests can provide the exact yiel

Bleeding and segregation are phenomena that occur in concrete during its placement and curing process.

• Bleeding is the process of water rising to the surface of freshly placed concrete due to the settlement of solid particles.

• Segregation refers to the separation of coarse aggregates from the rest of the concrete mix, resulting in an uneven distribution of materials.

• Bleeding can lead to a weakened surface layer and reduc...read more

The design mix ratios of concrete mixes vary depending on the specific requirements and applications.

• Design mix ratios are determined based on factors such as strength, workability, durability, and environmental conditions.

• Common design mix ratios include 1:2:4 (cement:sand:aggregate) for general construction, 1:1.5:3 for reinforced concrete, and 1:0.5:1 for high-strength concrete.

• Different types of concrete mixes, suc...read more

Shear force and bending moment diagrams are graphical representations of the internal forces and moments in a structural element.

• Shear force diagram shows the variation of shear force along the length of the element.

• Bending moment diagram shows the variation of bending moment along the length of the element.

• Shear force and bending moment diagrams are commonly used in structural analysis and design.

• These diagrams help e...read more

BBS of Stirrups is a reinforcement detailing technique used in construction.

• BBS stands for Bar Bending Schedule.

• Stirrups are used to provide lateral support to vertical reinforcement bars in concrete structures.

• BBS of Stirrups involves determining the quantity, shape, and dimensions of stirrups required in a structure.

• It helps in ensuring the structural integrity and strength of the concrete elements.

• Example: BBS of St...read more

Concrete strength increases significantly from 7 days to 28 days.

• Concrete strength is measured in terms of compressive strength.

• At 7 days, concrete typically reaches about 70-80% of its 28-day strength.

• Factors like cement type, water-cement ratio, curing conditions, and aggregate properties affect the strength development.

• Higher strength concrete is often required for structural applications.

• Testing concrete strength a...read more

Clear covers are used in all items.

• Clear covers provide visibility and protection to the items.

• They are commonly used in electronic devices, such as smartphones and tablets.

• Clear covers are also used in food packaging to showcase the product.

• In the automotive industry, clear covers are used for headlights and taillights.

• They can be made of materials like glass, plastic, or acrylic.

Development length in compression member is the length of reinforcement required to transfer the stress from the steel to the concrete.

• Development length is determined by factors such as the strength of the concrete, the diameter of the reinforcement, and the bond strength between the steel and concrete.

• It is important to ensure that the development length is sufficient to prevent premature failure or slippage of the r...read more

The cutting length of a rectangular stirrup is calculated based on the dimensions of the stirrup and the bending requirements.

• The cutting length is determined by adding the lengths of all sides of the stirrup and multiplying by the number of bends.

• For example, if the stirrup has sides measuring 10 cm, 15 cm, and 10 cm, and it requires 2 bends, the cutting length would be (10 + 15 + 10) * 2 = 70 cm.

• The cutting length is...read more

True power is the actual power consumed by a device, while reactive power is the power required to establish and maintain the electromagnetic fields in an AC circuit.

• True power is measured in watts (W) and represents the actual energy consumed by a device.

• Reactive power is measured in volt-amperes reactive (VAR) and represents the power required to establish and maintain the electromagnetic fields in an AC circuit.

• True...read more