power system

A fully transposed transmission line has

• 1. equal positive and zero sequence impedances

• 1. positive sequence impedances of zero always

• 1. equal negative and zero sequence impedances

• 1. equal positive and negative sequence impedances

• all of this above

What is the primary purpose of a synchronous condenser in a power system?

• 1. To adjust voltage and control reactive power by varying its excitation

• 1. To operate as a generator for supplying real power

• 1. To supply real power to the grid

• 1. To absorb both real and reactive power from the grid

• option A & D

which is the first nuclear power plant in india

• tarapur

• narora

• rana pratap

• kalpakkam

• koradi, nagpur

A consumer consumes 600 kWh per day at a load factor of 0.5. Without increasing the maximum demand, if the consumer increases the load factor to 0.8, the consumption of energy in kWh would be

• 480

• 960

• 900

• 300

• 100

how to calculate reserve capacity of power plant

• Reserve capacity = Plant Capacity / Maximum Demand

• Reserve capacity = Plant Capacity + Maximum Demand

• Reserve capacity = Plant Capacity * Maximum Demand

• Reserve capacity = Plant Capacity – Maximum Demand

• Reserve capacity = Plant Capacity Maximum Demand 1.5

The given symbol is lighting circuit fuse boards of ___

• distribution fuse board with switches

• Main fuse board with switch

• 1. Distribution fuse board without switches

• 1. Main fuse board without switches

• control board

The minimum clearance distance in foot that equipment should be kept away from 50 kV power lines is:

• 20

• 10

• 15

• 5

• 1.5

belted cables are used for voltages up to 11 kV but in extraordinary cases, their use may be extended up to ?

• 33 kv

• 22kv

• 11.5 kv

• 20 kv

• not be extended

The voltage that appears across the breaker contact after the circuit breaker is opened is called.

• 1. Arc voltage

• 1. Restriking voltage

• 1. Recovery voltage

• 1. Surge voltage

• breakdown voltage

lead is a _____

• superconductor

• semiconductor

• conductor

• both 2 &3

• all of this above