III YEAR PSOC

A power system has a maximum load of 15 MW. Annual load factor is 50%. The reserve capacity of plant is _____ if the plant capacity factor is 40%.

• 3.75 MW

• 7.75 MW

• 46.75 MW

• 8.75 MW

The area under the load curve represents ____________

• maximum demand

• load factor

• the average load on power system

• number of units generated

The ratio of maximum demand to connected load is

• Demand factor

• Load factor

• Utilisation Factor

• Plant capacity factor

A higher load factor means

• Cost/unit is less

• Less variation in load

• Generation is more

• All of these

Turbine speed governing system consists of

• Flyball speed governor

• Hydraulic amplifier and Linkage mechanism

• Speed changer

• All of above

In a power plant, reserve generating capacity which is not in operation but can be made available for service is ______

• Hot Reserve

• Spinning Reserve

• Cold Reserve

• Firm power

Time constant of turbine is lies between

• 0.2 to 2.5 sec

• 0 to 1 sec

• 1 to 2 sec

• Depends on turbine design

Load frequency and economic dispatch controller are working

• Independently

• Together with

• Sequential

• None of above

Which of the following methods is/are used for reactive or voltage compensation

• Shunt capacitor

• Series capacitor

• Generation excitation control

• All of the above

Types of static VAR compensators are

• FC-TCR

• TSC-TCR

• Both a and b

• None of above