Distribution lines in India generally use 

Which of the following distribution systems are preferred for good efficiency and high economy? 

Feeder is designed mainly from point of view of 

Power distribution by cable is generally adopted for line length 

Conductors, which connects the Consumer's terminal to distribution line is known as 

Which distribution system is more reliable? 

Identify the properties for neutral wire and earth wire from the given list.

(i) It is connected to the neutral point of the transformer that is earthed at the substation.

 (ii) It is a solid earth at the substations.

 (iii) Unbalanced current flows through it.

 (iv) Only fault current flows through it.

A bus-bar is rated by 

The load side typical distribution system has :

A line which connects distributor to the substation is called as : 

The following difficulty of radial system can be overcome by ring system. 

A line from which loads are tapped off is called a 

Shunt capacitors in sub stations 

A circuit is disconnected by isolators when

One ring network of distributors is fed by more than one feeder in the_________electrical power distribution system, 

Ring main distribution system is preferred to a radial distribution system because 

A three phase 4 wire system is commonly used for________. 

While using a clip-on type current transformer. the primary is connected to_______and the secondary is connected to________.

At a pressure of 500 V applied between each live conductor and earth for a period of one minute, the insulation resistance of medium and low voltage installations shall be at least : 

For cost & safety, the outdoor substations are installed for voltages above : 

In India________supply is 415 V supply through 4-wires. 

Voltage drop is the main consideration while designing a_________.

To measure the current is a 1- transmission line, primary winding of current transformer is connected in :

In 11 kV lines, when conductors are in horizontal or delta formation,________is provided. 

Which of the following is not of the material used for HT (11 KV) and LT (415 V) distribution lines? 

In a single-phase AC system, two wires are sufficient for transmitting voltage to the load. These are : 

A 3-phase 4 wire system is commonly used on 

Which of the following is NOT a valid system for the distribution of AC power? 

A single Phase-3 Wire AC system is made up of 

A single-phase three-wire AC source will have : 

A single phase radial distributor is fed at one end at 220 V and is loaded with unity power factor loads as under :

If the total resistance for go and return of the distributor is 0.1 £2, the voltage at the far end is 

With same maximum voltage between conductors, the ratio of copper volumes needed in 3-phase, 3-wire system and 1-phase, 2-wire system is : 

In India Supply voltage in a single phase system in about : 

In a single phase system of distribution service connection is made by using______wire. 

Which of the following is the most economical a-c distribution system 

A 3-phase, 4 wire system is commonly used for 

The standard voltage for three phase at which the supply authorities deliver power to the consumer is : 

The percentage saving in copper feeder if the line voltage in a 2-wire DC system is raised from 220 V to 500 V for the same power transmitted over the same distance and having the same power loss is : 

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative :

Assertion (A) : 3 wire dc distribution system is preferred over 2 wire dc distribution system. Reason (R) : the 3 wire dc system of distribution is more safe. 

In 3 wire DC system, the area of cross section of neutral is generally________of either outer. 

The percentage ratio of copper for 3-wire DC system to 2-wire DC distribution system for same cross-section of neutral wire as outer wire is 

Fig. below shows a 2 wire DC distributor cable AC of 4 km long supplying loads of 100A and 200A at distances of 2 km and 4 km from A. The feeder is fed at point A with a voltage of 500V. The voltage available at the farthest point in the system is_________.

 (Assume conductor resistance per km as )

A bipolar DC line has 

_______voltages can be available from a 3 wire DC distribution system. 

In DC power transmission, which among the following is a DC generator whose function is to inject or add a certain voltage to the supply voltage so as to compensate the voltage drop (IR drop) in transmission feeders? 

In a 3-wire DC transmission system, if the potential difference is 460 V, then the potential difference of positive outer above the neutral will be : 

Which type of transmission system is NOT considered for a DC system? 

Which of the following is NOT related to overhead lines? 

One of the most commonly used materials for insulators of an overhead transmission line, i.e. glass, has the drawback (when used as an insulator material) that : 

Which of the following requirements of properties is not essential for line insulators?