GitBook practice — Set 9 (Poush, 2081)

01Question bank

Two turbo-generators, each of capacity 25,000 kW, have been installed at a hydel power station. The load on the hydel plant varies from 15,000 kW to 40,000 kW. The total installed plant capacity and the load factor are nearly:

A

40,000 kW and 68.8%

B

50,000 kW and 68.8%

C

40,000 kW and 62.3%

D

50,000 kW and 62.3%

02Question bank

If the difference of levels between two points A and B is 1 meter and their distance apart is 50 meters, the gradient is said to be:

A

1 in 50 or 2%

B

1 in 5 or 20%

C

1 in 20 or 5%

D

none of these

03Question bank

The Gross Command Area for a distributary is 8000 hectares 80% of which is culturable irrigable. The intensity of irrigation for Rabi season is 50% and the average duty at the head of the distributary is 2000 hectares/cumec. Determine the discharge required at the head of the distributary.

A

1.33 cumec

B

1.60 cumec

C

1.40 cumec

D

1.44 cumec

04Question bank

Efficiency of a riveted joint is defined as the ratio of:

A

least strength of a riveted joint to the strength of solid plate

B

greatest strength of a riveted joint to the strength of solid plate

C

least strength of a riveted plate to the greatest strength of the riveted joint

D

all of the above

05Question bank

The total earth pressure

P_0

at rest per unit length for vertical height H is:

A

P_0 = \frac{1}{2} K_0 \gamma H^2

B

P_0 = \gamma H^2

C

P_0 = K_0 \gamma H^2

D

P_0 = \frac{1}{2} \gamma H^2

06Question bank

A penstock is 3000 meters long. Pressure wave travels in it with a velocity of 1500 m/s. If the turbine gates closed uniformly and completely in a period of 4.5 seconds, then it is called:

A

slow closure

B

rapid closure

C

uniform closure

D

sudden closure

07Question bank

An earth-retaining structure be subjected to the following lateral earth pressures: i. Earth pressure at rest\ ii. Passive earth pressure\ iii. Active earth pressure The correct sequence of the increasing order of the magnitudes of these pressure is:

A

iii, ii, I

B

i, iii, ii

C

i, ii, iii

D

iii, i, ii

08Question bank

What is the below instrument called? \[Image description: A T-shaped drawing instrument]

A

Set square

B

Straightedge

C

T-square

D

Opisometer

09Question bank

The total annual cost of highway transportation may be expressed as?

A

A = B - CN

B

A = B + CN

C

A = \frac{B}{CN}

D

A = \frac{CN}{B}

Where,\

B

= annual cost of highway\

C

= annual cost of vehicle operation\

N

= total number of vehicles on the road per year

10Question bank

The absolute minimum radius of horizontal curve for a design speed 60 kmph is:

A

131 m

B

210 m

C

360 m

D

none of the above

11Question bank

If a is the base amount expenditure, b is the increase in the operation cost each year over a period of n years, the total cost of maintenance is:

A

a + (n + 1)b

B

a + (n - 1)b

C

a \times (n - 1)b

D

a \cdot (n - 1)b

12Question bank

A sedimentation tank of

20\mathrm{m} \times 5\mathrm{m} \times 3\mathrm{m}

receives a flow of

1200\mathrm{m}^3 /\mathrm{day}

continuously. The detention time of sedimentation tank will be... hours.

A

8

B

6

C

4

D

2

13Question bank

For the design of a storm sewer in a drainage area, if the time of concentration is 20 minutes then the duration of rainfall taken as:

A

10 min

B

20 min

C

30 min

D

40 min

14Question bank

Degree of saturation of a natural soil deposit having water content 15%, specific gravity 2.50 and void ratio 0.05, is:

A

50%

B

60%

C

75%

D

80%

15Question bank

If the straight sides of a triangular section of a lined canal with circular bottom of radius

D

, make an angle

\theta

with horizontal, the hydraulic mean depth is:

A

D

B

D/2

C

D/3

D

D/4

16Question bank

The spacing provided for shear reinforcement is given as:

A

S_v = \frac{A_{sv} \times 0.87 f_y}{0.4 b}

B

S_v = \frac{A_{sv} \times 0.91 f_y}{0.4 b}

C

S_v = \frac{A_{sv} \times 0.12 f_y}{0.4 b}

D

S_v = \frac{A_{sv} \times 0.23 f_y}{0.4 b}

17Question bank

Which of the following line is usually parallel to the plot boundaries and laid down in each case by the Authority, beyond which nothing can be constructed towards the site boundaries?

A

Property line

B

Building line

C

Plot line

D

Control line

18Question bank

If degree of a road curve is defined by assuming the standard length of an arc as 30 metres, the radius of 1° curve is equal to:

A

1719 m

B

1146 m

C

1046 m

D

1573 m