PHEP CH. 12

Question 1

IN MOST HYDROELECTRIC DEVELOPMENTS THE HEAD AND WATER FLOW WILL

Answer 1

FLUCTUATE

Question 2

INTAKE DESIGN HAS A LARGE EFFECT ON

Answer 2

-VELOCITY
-VOLUME
-HEAD

Question 3

A PARTIALLY CLOGGED TRASH RACK WILL

Answer 3

CAUSE A DECREASE IN THE EFFECTIVE HEAD

Question 4

WOOD STAVE PIPE WOULD PROBABLY NOT BE USED FOR

Answer 4

HEADS ABOVE 500 FEET

Question 5

AN OPEN CONDUIT SYSTEM IMPLIES

Answer 5

THE PRESENCE OF A FREE SURFACE

Question 6

THE BEST CANAL CROSS SECTION FROM A HYDRAULIC POINT OF VIEW IS DEFINED AS

Answer 6

THE ONE THAT HAS A MINIMUM WETTED PERIMETER

Question 7

THE LEAST EFFICIENT TYPE OF HIGH LINE CONDUIT IS THAT TYPE WHICH

Answer 7

HAS THE GREATEST EFFECT ON THE AVAILABLE HEAD

Question 8

STEEL PIPE IS USED MORE EXTENSIVELY THAN ANY OTHER TYPE OF PIPE FOR PENSTOCK CONSTRUCTION BECAUSE

Answer 8

OF THE DEGREE OF FLEXIBILITY IT OFFERS IN SATISFYING DESIGN CRITERIA IN ALL OF THE ABOVE AREAS

Question 9

ONE OF THE MAJOR ADVANTAGES OF USING A PRESSURE TUNNEL IN A POWER CONDUIT SYSTEM IS THAT

Answer 9

IT PERMITS FULL USE OF THE AVAILABLE HEAD

Question 10

POSITIVE WATER-HAMMER PRESSURE CAUSED BY A SUDDEN DECREASE IN THE DEMAND FOR WATER CAN BE ELIMINATED BY

Answer 10

-A RELIEF VLV
-A PRESSURE REGULATOR
-A SURGE TANK

Question 11

NEGATIVE WATER HAMMER PRESSURE IS CREATED BY

Answer 11

A SUDDEN INCREASE IN THE DEMAND FOR WATER

Question 12

WHICH OF THE BELOW CONDITIONS WOULD PROBABLY NOT CAUSE THE WATER LEVEL IN THE RISER OF A DIFFERENTIAL SURGE TANK TO FALL

Answer 12

A LOAD REJECTION

Question 13

PUMPED STORAGE TYPE OF HYDROELECTRIC DEVELOPMENTS IMPLIES A CAPABLILITY FOR

Answer 13

-IMPROVING LOAD FACTORS ON INTER-CONNECTED POWER SYSTEM STEAMPLANTS
-PROVIDING A WIDER RANGE OF POWER SYSTEM RESERVE CAPACITY
-IMPROVED PEAK LOAD OPERATION

Question 14

THE BEST HYDRAULIC RECTANGULAR CROSS SECTION OCCURS WHEN

Answer 14

Y=B/2

Question 15

PENSTOCK VELOCITIES MAY RANGE FROM

Answer 15

6 TO 20 FT/SEC.