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WorksheetsPPS semi Q2
Total questions: 15
Worksheet time: 8mins
What is the primary function of a steam turbine?
Convert thermal energy into mechanical energy
Store thermal energy
Reduce mechanical stress
Increase steam pressure
Which material is commonly used for turbine blades?
Aluminum alloys
Plastic composites
High-alloy steels
Copper
What is the purpose of the rotor in a steam turbine?
To contain steam pressure
To regulate steam flow
To support the turbine blades
To convert mechanical energy to electrical energy
Which material is used for the casing of high-pressure turbines?
Aluminum
Cr-Mo steels
Titanium
Cast iron
What is the function of the overspeed trip mechanism?
To increase steam flow
To prevent the turbine from exceeding its design speed
To monitor oil pressure
To control vibration levels
What type of steel is typically used for bearings in steam turbines?
High-grade stainless steel
Aluminum alloy
Carbon steel
Cast iron
What is the role of the governor control system?
To regulate steam flow and maintain constant speed
To monitor temperature levels
To manage steam extraction
To control the lubrication system
Which safety device monitors the lubricating oil pressure?
Low lubricating oil pressure alarm
Vibration monitoring system
Overspeed trip mechanism
Emergency stop valve
What material is used for gland seals in steam turbines?
Copper
High-temperature graphite
Plastic
Aluminum
What is the purpose of the throttle valve control?
To regulate steam extraction
To maintain oil pressure
To control the amount of steam entering the turbine
To monitor vibration levels
What happens if the condenser vacuum drops below a certain level?
The rotor speed is decreased
The steam flow is increased
The turbine is tripped to prevent damage
The turbine continues to operate normally
Which material is used for nozzles and diaphragms?
Babbitt metal
Aluminum
Nickel-based alloys
Copper
What is the function of the extraction steam control?
To prevent steam leakage
To monitor turbine speed
To manage steam extraction for heating systems
To regulate steam flow into the turbine
What is the main purpose of safety devices in a steam turbine?
To reduce maintenance costs
To enhance performance
To protect personnel and equipment
To increase steam pressure
Which component is responsible for converting thermal energy into mechanical energy in a steam turbine?
Throttle valve
Governor
Rotor
Condenser
