Instantaneous unit hydrograph is a hydrograph ofi) unit durationii) unit rainfall excessiii) infinitely small durationiv) infinitely small rainfall excessThe correct answer is

The peak of a 4 hour flood hydrograph is 240 m³/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m³/sec, then the peak of 4-hours unit hydrograph will be

A

20 m³/sec

B

25 m³/sec

C

30 m³/sec

D

35 m³/sec

The unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of

A

same duration only

B

same and shorter duration

C

same and longer duration

D

any duration

S-hydrograph is used to obtain unit hydrograph of

A

shorter duration from longer duration

B

longer duration from shorter duration

C

both (A) and (B)

D

none of the above

The unit hydrograph due to a storm may be obtained by dividing the ordinates of the direct runoff hydrograph by

A

direct runoff volume

B

period of storm

C

total rainfall

D

none of the above

When is the Hydrograph called as a unit hydrograph?

A

When 1cm of runoff is resulted from a rain fall

B

When 3cm of runoff is resulted from rainfall

C

When 1mm of runoff is resulted from rainfall

D

When 3mm of runoff is resulted from rainfall

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives. If there is a subject of really ______________ interest and utility, it is the art of writing and speaking one's own language ___________. It is the basis of culture, as we all know; but it is infinitely more _________ that, it is the basis of business. ___________ salesman can sell anything unless he can explain the merits of his goods in effective language, or can write ___________ advertisement equally effective, or present his ideas, and the facts, in a letter. is infinitely more _________ that, it is the basis

A

then

B

such

C

so

D

than

An infinitely long wire carrying a current $$I\left( t \right) = {I_0}\cos \left( {\omega t} \right)$$ is placed at a distance a from a square loop of side a as shown in the figure. If the resistance of the loop is R, then the amplitude of the induced current in the loop is
Electromagnetic Theory mcq question image

Electromagnetic Theory mcq question image

A

$$\frac{{{\mu _0}}}{{2\pi }} \cdot \frac{{a{I_0}\omega }}{R}\ln 2$$

B

$$\frac{{{\mu _0}}}{\pi } \cdot \frac{{a{I_0}\omega }}{R}\ln 2$$

C

$$\frac{{2{\mu _0}}}{\pi } \cdot \frac{{a{I_0}\omega }}{R}\ln 2$$

D

$$\frac{{{\mu _0}}}{{2\pi }} \cdot \frac{{a{I_0}\omega }}{R}$$

Variability of rainfall is
i) largest in regions of high rainfall
ii) largest in coastal areas
iii) largest in regions of scanty rainfall
The correct answer is

A

only (i)

B

(i) and (ii)

C

only (iii)

D

(ii) and (iii)

A passage is given with 5 questions following it. Read the passage carefully and choose the best answer to each question out of the four alternatives. Due to poor rainfall over the past few months, the vadu mangai season is expected to be short this year. There are two distinct varieties available in the vicinity of Coimbatore. The closest to Coimbatore, and the one that appears in the markets first, is the Thadagam variety. The second and more popular variety is the one from the Thirumoorthy Hills, near Udumalpet. Representatives from commercial pickle brands whisk these mangais away in big lots directly from the wholesalers. Only a small portion of the year's harvest trickles down to the local markets. Small vendors bring sacks full of these tiny tender mangoes to one particular street corner in Ram Nagar during the season. The corner of Rajaji Road and Sathyamurthy Road plays host to these vendors from as early as 7.00 am every day. Depending on the quantity they have, the mangais are available until around 11.00 am. If the vendors have a good day and their produce is sold quickly, they pack up and leave even as early as 9.00 am. What may happen if there is adequate rainfall?

A

Local vendors will get fewer mangoes.

B

The vadu mangai season will be longer that year.

C

Commercial pickle companies will buy in smaller quantities.

D

Vendors will be able to sell quickly.

The correct expression for the instantaneous current if instantaneous voltage is Vm(sint) in a resistive circuit is?

A

1A

B

2A

C

3A

D

4A

Instantaneous unit hydrograph is a hydrograph of
i) unit duration
ii) unit rainfall excess
iii) infinitely small duration
iv) infinitely small rainfall excess
The correct answer is

Related Questions