Economic Aspects

In an interconnected system, the diversity factor of the whole system

• remains unchanged 
• decreases 
• increases 
• none of the above 

Load curve is useful in deciding the

• operating schedule of generating units
• sizes of generating units
• total installed capacity of the plant
• all of the above

Load factor of a power station is defined as

• maximum demand/average
• average load x maximum demand
• average load/maximum demand
• (average load x maximum demand)

High load factor indicates

• cost of generation per unit power is increased
• total plant capacity is utilised for most of the time
• total plant capacity is not properly utilised for most of the time
• none of the above

Power plant having maximum demand more than the installed rated capacity will have utilisation factor

• equal to unity
• less than unity
• more than unity
• none of the above

Maximum demand on a power plant is

• the greatest of all "short time interval averaged" demand during the period
• instantaneous maximum value of kVA supplied during a period
• both (a) or (b)
• none of the above

is the reserved generating capacity available for service under emergency conditions which is not kept in operation but in working order

• Hot reserve
• COld reserve
• Spinning reserve
• Firm power

Generating capacity connected to the bus bars and ready to take load when switched on is known as

• Hot reserve
• COld reserve
• Spinning reserve
• Firm power

In a load curve the highest point represents

• peak demand
• average demand
• diversified demand
• none of the above

The knowledge of diversity factor helps in determining

• plant capacity
• average load
• peak load
• kWh generated