Doosan Power Systems Planning Engineer Interview Questions and Answers

Q1. About salary breakups about current CTC:- Expected CTC:-
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Q1. Previous working experience detailed. Documents verification
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Q1. What is concrete Temperature
Ans. 
Concrete temperature refers to the temperature of freshly mixed concrete.
• Concrete temperature affects the setting time and strength development of concrete.

• It is important to control the temperature of concrete during mixing, transportation, and placement.

• High temperatures can accelerate the setting time and reduce workability, while low temperatures can slow down setting and strength gain.

• Concrete temperature is typic...read more
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Q2. Precocious of water structure joint
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Precocious of water structure joint refers to the ability of a joint to withstand water pressure and prevent leakage.
• Water structure joints should be designed and constructed to be watertight.

• Various types of joints can be used in water structures, such as expansion joints, construction joints, and control joints.

• Proper sealing materials and techniques should be employed to ensure the integrity of the joints.

• Regular in...read more
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Q3. Cube test results in 7 days & 28 days
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Cube test results are used to determine the compressive strength of concrete at 7 and 28 days.
• Cube test involves casting cubes of concrete and testing them under compression

• Results are reported in terms of compressive strength in MPa or psi

• 7-day results are used to determine early strength and 28-day results are used to determine ultimate strength

• Concrete with a compressive strength of at least 20 MPa is considered sui
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Q4. 7 days Results 65% & 28 days Results 99.99%
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Q1. All civil engineering construction into work site building construction
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Q2. All civil engineering construction
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Q3. RCC PCC into work from site experience on the civil engineering
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Aptitude test is for problem solving

Group discussion plays a majore role how employees connects to others and communicate with his colleagues and how dare he/she is..

Q1. Different types of mix design ?
Ans. 
Different types of mix design include nominal mix, standard mix, and design mix.
• Nominal mix design involves using standard ratios without testing.

• Standard mix design follows specific guidelines and proportions.

• Design mix design is customized based on specific project requirements.

• Examples: M20, M30, M40 mixes.
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Q2. Overlaping steel?
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Overlapping steel refers to the practice of placing steel bars on top of each other to increase strength and stability in construction.
• Overlapping steel bars helps distribute loads evenly and prevent structural failure.

• Properly overlapping steel bars is crucial for ensuring the structural integrity of a building.

• Commonly used in reinforced concrete structures such as beams, columns, and slabs.

• Overlap length and spacing...read more
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Q3. Soil Compaction test
Ans. Load bearing capacity of soli for any structural work test its density
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Q4. Ratio of mortar for plaster work
Ans. 
The ratio of mortar for plaster work is typically 1:3 to 1:6, depending on the type of surface and desired finish.
• The most common ratio for plaster work is 1 part cement to 3 parts sand.

• For a smoother finish, the ratio can be adjusted to 1 part cement to 4 or 5 parts sand.

• In some cases, a 1:6 ratio (1 part cement to 6 parts sand) may be used for rough surfaces or base coats.

• Water should be added gradually to achieve th
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Q5. Quantity of brick in 50 squre meter
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The quantity of bricks in 50 square meters depends on the size of the bricks and the thickness of the wall being built.
• Calculate the area of the wall in square meters

• Determine the size of the bricks being used (e.g. standard size is 0.22m x 0.1m x 0.07m)

• Calculate the number of bricks needed by dividing the wall area by the area of one brick
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Q6. Bar bending schedule
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Q1. The panel asked me about my previous company & projects ,few technical Questions. Be confident & on point.
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Q1. What is curing,why it is done
Ans. 
Curing is the process of maintaining moisture and temperature conditions in concrete for a specific period to ensure proper hydration and strength development.
• Curing helps in preventing moisture loss from the concrete, which is essential for proper hydration.

• It helps in maintaining the desired temperature for the chemical reactions to occur.

• Curing enhances the strength, durability, and overall performance of the concre...read more
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