Related Questions

What will be the reflection co-efficient of the wave of load connected to transmission line if surge impedance of the line is equal to load ?
A Zero
B Unity
C Infinity
D None of the above
The time interval from when the given star passes directly overhead to when it next passed directly overhead, is defined as
A one sidereal day
B one solar day
C both the terms are similar, so any of these may be used
D None of the above
When the actual overhead is less than the absorbed overhead it is ________.
A over absorption
B under absorption
C equal absorption
D major absorption
Which of the following devices will receive voltage surge first travelling on the transmission line ?
A Lightning arresters
B Relays
C Step-down transformer
D Switchgear
In an ac circuit, power to the load peaks at the frequency at which the load impedance is the complex conjugate of the output impedance.
A True
B False
In order to get maximum power transfer from a capacitive source, the load must have an impedance that is the complex conjugate of the source impedance.
A True
B False
Surge tanks are used
A for storage water
B to increase the velocity in a pipeline
C as overflow valves
D to guard against water hammer
The surge phenomenon is particularly important in case of
A low voltage transformers
B medium voltage transformers
C high voltage transformers
D any of the above
The surge resistance of cable is
A 5 ohms
B 20 ohms
C 50 ohms
D 100 ohms
The purpose of a surge tank is
A To control the pressure variations due to rapid changes in the pipe line flow
B To eliminate water hammer possibilities
C To regulate flow of water to turbines by providing necessary retarding head of water
D All of the above

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