# When a pump primes and works but not up to its capacity and pressure, the attributable reasons are as follows: 1. Speed may be too low. 2. Suction lift is too high 3. Total static head is much higher than as designed. 4. Foot valve has been removed. Which of these reasons can be valid

1.  1, 2, 3 and 4

2.  1, 2 and 4 only

3.  2, 3 and 4 only

4.  1, 2 and 3 only

4

1, 2, 3 and 4

Explanation :
No Explanation available for this question

# Determine the number of impellers required for a multistage pump to lift 3840 liters per minute against a total head of 80 m at a speed of 700r.p.m, given that the limiting Ns for each impeller is 700 units.

1.  6

2.  5

3.  4

4.  3

4

5

Explanation :
No Explanation available for this question

# A 20 cm centrifugal pump delivers 13.2lps at a head of 45 m when running at a speed of 1350r.p.m. A similarly designed pump of 15cm size runs at the same speed. What are the most likely values of discharge and delivery head serviced by this second pump

1.  5.57lps and 25.3 m

2.  7.20lps and 25.3 m

3.  8.27lps and 27.8 m

4.  8.27lps and 29.4 m

4

5.57lps and 25.3 m

Explanation :
No Explanation available for this question

# A linked bar chart is an improvement over a conventional bar chart, because 1. Resources for individual activities can be planned 2. Floats will be available for utilization as needed. 3. Milestone events need not be specifically monitored Which of these is/are correct

1.  1, 2 and 3

2.  3 only

3.  2 only

4.  1 only

4

1, 2 and 3

Explanation :
No Explanation available for this question

# In PERT analysis, the time estimates of activities and probability of their occurrence follow:

1.  Beta distribution

2.  Gamma distribution

3.  Normal distribution

4.  Poisson’s distribution

4

Beta distribution

Explanation :
No Explanation available for this question

# Mercury is often used in barometer because:-

1.  It is the best liquid

2.  The height of barometer will be less

3.  Its vapor pressure is so low that it may be neglected

4.  Both (b) and (c)

4

Both (b) and (c)

Explanation :
No Explanation available for this question

# A sewer of 400 mm diameter and slope 1 in 400 running half-full, has a flow velocity of 0.82 m/sec. What velocity of flow will be obtained if the slope is made 1 in 100

1.  3.82 m/s

2.  1.64 m/s

3.  0.82 m/s

4.  0.41 m/s

4

1.64 m/s

Explanation :
No Explanation available for this question

# Scheduled duration (in days) of activities and their respective resource requirement (in units per day) are shown on the diagram. What is the total number of units of resource required on the 11th and 16th days

1.  21 and 10

2.  18 and 12

3.  18 and 10

4.  21 and 12

4

21 and 10

Explanation :
No Explanation available for this question

# Statement (I): Planks sawn from trees with twisted fibers are stronger than those cut from trees with normal growth Statement (II): Timber from trees with twisted fibers is used straightaway as poles.

1.  Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)

2.  Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

3.  Statement (I) is true but Statement (II) is false

4.  Statement (I) is false but Statement (II) is true.

4

Statement (I) is false but Statement (II) is true.

Explanation :
No Explanation available for this question

# Statement (I): Attention must be extended to the results of the phenomenon of bulking of sand towards ascertaining the water demand in mortar preparation. Statement (II): The total volume of mortar prepared per batch of mix preparation for use-in-work should be mindful of the initial setting time.

1.  Statement (I) and Statement (II) are individually true and Statement (II) is the correct explanation of Statement (I)

2.  Both Statement (I) and Statement (II) are individually true but Statement (II) is not the correct explanation of Statement (I)

3.  Statement (I) is true but Statement (II) is false

4.  Statement (I) is false but Statement (II) is true.

4