ESE 2022 CE Technical Quiz 5

Consider following losses in a prestressed beam

1. Elastic shortening

2. Friction

3. Creep

4. Shrinkage

5. Relaxation

Time dependent losses is/are:

According to Indian standard code IS 1343, which of the following statements is/are correct.

1. The value of shrinkage strain for design of post tensioned concrete may be increased by 50% in dry atmospheric conditions subjected to a maximum of 3 × 10^–4.

2. For pretensioned prestressed concrete, the grade of concrete shall not be less than M40.

3. At the time of initial tensioning, the maximum tensile stress immediately behind the anchorages shall not exceed 80% of the ultimate tensile strength of the wire.

Correct value of minimum cement content (kg/m³); maximum water-cement ratio and minimum grade of concrete for ‘severe’ exposure condition for reinforced concrete with 20 mm nominal maximum size of aggregates as per IS 456: 2000 is:

For the curves shown in figure, match List-I (curve) with List-II (type of fluid) and choose the correct option using the codes given below:

A triangular open channel with side slope of 1V : mH is carrying a discharge Q at depth y. Which of the following statements is /are NOT correct for the channel:

1) Critical depth of flow is given by,

2) Froude number is given by

3) Specific energy is given by,

Consider following statement regarding types of cement:

1) High alumina cement is produced by fusing together a mixture of lime stone, bauxite and gypsum.

2) Final setting time of high alumina cement is less than OPC

3) Initial setting time of rapid hardening cement is less than OPC

4) Rapid hardening cement contains higher percentage of C₃S than OPC

Correct statement(s)/are:

Which of the following is NOT a defect due to seasoning in timber?

A 5 m³ central concrete mixing plant takes in 1480 kg of cement, 4620 kg of sand and 5430 kg of coarse aggregates along with 760 kg of water per batch. These is a reduction of 1.6% in volume of the freshly mixed wet concrete from the nominal volume the unit weight of freshly mixed wet concrete will be:

Consider following statements regarding cement.

1) Finer cement has high early strength

2) PPC produces less heat of hydration than OPC

3) Rapid hardening cement is finer than OPC

4) Initial setting time of low heat cement is lesser than OPC

Correct statement is/are

Consider following statements regarding Bonds in Brick work:

1. English bond is more economical than flemish bond

2. In English bond each header course starts from queen closer

3. For walls having thickness greater than one and a half brick thick, English bond is stronger than flemish bond

4. Aesthetic appearance of the Flemish bond is better than an English bond.

Incorrect statement is/are