DISTRIBUTION REVIEWER ^.^

Which of the following distribution system is more reliable?

• radial system

• tree system

• ring main system

• all are equally reliable

In a distribution system major cost is that of

• earthing system

• distribution transformer

• conductors

• meters

In the design of a distributor which of the following is the major consideration?

• voltage drop

• current carrying capacity

• frequency

• kVA system

The over voltage surges in power systems are caused by

• lightning

• resonance

• switching

• all of the above

Which portion of the our system is least prone to faults?

• alternator

• transformer

• overhead lines

• underground cable

High voltage transmission lines use

• suspension insulators

• pin insulators

• both a and b

• none of the above

In transmission lines the cross arms are made of

• copper

• wood

• RCC

• steel

The phenomena of rise in voltage at the receiving end of the open circuited or slightly loaded line is called the

• Seeback effect

• Ferranti Effect

• Raman Effect

• None of the above

Primary distribution is carried out by _____

• single phase two wire system

• single phase three wire system

• two phase three wire system

• three phase three wire system

Which of the following statement is false?

• A single phase system has many advantages over a three phase system

• The supply frequency of a single phase AC system is 50/60 Hz.

• To develop a polyphaser system, the armature winding in a generator is divided into the required number of phases

• A three phase system is found to be more economical