PPS semi Q1

What is the normal operating range for lubricating oil pressure in large turbines?

• 0.5 to 1.0 bar

• 2.5 to 3.5 bar

• 1.5 to 2.5 bar

• 3.5 to 4.5 bar

What can cause low lubricating oil pressure?

• High oil temperature

• Oil pump failure

• Blocked oil return lines

• Excessive oil viscosity

What is the purpose of the lubricating oil temperature alarm?

• To monitor oil viscosity

• To ensure effective lubrication

• To detect oil leaks

• To measure oil flow rate

What is the normal operating range for lubricating oil temperature?

• 30°C to 40°C

• 50°C to 65°C

• 90°C to 100°C

• 70°C to 80°C

What triggers the lubricating oil sump level alarm?

• Oil level exceeds maximum

• Oil level drops below safe minimum

• Oil pressure falls below threshold

• Oil temperature exceeds limit

What is a common cause of high differential pressure across oil filters?

• Low oil temperature

• High oil viscosity

• Oil degradation

• Excessive oil flow

What is the normal operating range for bearing temperatures?

• 45°C to 55°C

• 95°C to 105°C

• 65°C to 85°C

• 85°C to 95°C

What can cause excessive bearing temperatures?

• Excessive oil flow

• Insufficient lubrication

• High oil viscosity

• Low oil pressure

What is the purpose of the gland steam pressure alarm?

• To measure turbine speed

• To detect water leaks

• To prevent air ingress

• To monitor oil temperature

What is the normal operating range for gland steam pressure?

• 0.3 to 0.4 bar

• 0.05 to 0.1 bar

• 0.1 to 0.2 bar

• 0.2 to 0.3 bar