Question: Which of the following component, in a steam power plant, needs maximum maintenance attention?

• 1. Steam turbine
• 2. Condenser
• 3. Water treatment plant
• 4. Boiler

Question: The effect of electric shock on human body depends on which of the following?

• 1. current
• 2. voltage
• 3. duration of contact
• 4. all of the above

Question: Which of the following devices may be used to provide protection against lightening over voltages?

• 1. Horn gaps
• 2. Rod gaps
• 3. Surge absorbers
• 4. All of the above

Question: Load shedding is possible through which of the following?

• 1. Switching of the loads
• 2. Frequency reduction
• 3. Voltage reduction
• 4. Any of the above

Question: The knowledge of diversity factor helps in determining__________?

• 1. plant capacity
• 2. average load
• 3. peak load
• 4. kWh generated

Question: Which of the following statements pertains to resistors only _____________?

• 1. can dissipate considerable amount of power
• 2. can act as energy storage devices
• 3. connecting them in parallel in¬creases the total value
• 4. oppose sudden changes in voltage

Question: Wire-wound resistors are unsuitable for use at high frequencies because they_______?

• 1. create more electrical noise
• 2. are likely to melt under excessive eddy current heat
• 3. consume more power
• 4. exhibit unwanted inductive and capacitive effects

Question: The purpose of a parallel circuit resonance is to magnify________?

• 1. current
• 2. voltage
• 3. power
• 4. frequency

Question: All definitions of power factor of a series R-L-C circuit are correct except__________?

• 1. ratio of net reactance and impedance
• 2. ratio of kW and kVA
• 3. ratio of J and Z
• 4. ratio of W and VA

Question: In AC. circuits, laminated iron is invariably used in order to__________?

• 1. reduce eddy current loss
• 2. increase heat radiation
• 3. make assembly cheap and easier
• 4. reduce circuit permeability