Marine Engineering Quiz

Which of the following is a condition for applying Bernoulli's equation?

• The fluid flow must be compressible

• The fluid flow must be steady and incompressible

• The fluid flow must be turbulent

• The fluid flow must have frictionless boundaries

What does a negative reading in a manometer indicate?

• High pressure

• Vacuum or pressure lower than atmospheric

• Temperature drop

• Fluid leakage

If the Reynolds number is high, what type of flow is likely present?

• Laminar flow

• Turbulent flow

• Transitional flow

• Compressible flow

A substance will float in water if its specific gravity is:

• 1

• <1

• =1

• 0

A vessel receives 200 m³ of marine fuel oil. The density at 15°C is 0.960 kg/L. Calculate the bunker weight in metric tons (MT):

• 192

• 144

• 208

• 150

What is the significance of calculating hydrostatic loads on ship structures?

• To ensure the structural integrity and stability of the ship under water pressure.

• To optimize fuel consumption

• To calculate the weight of the ship

• To determine the buoyancy force

The pressure difference in a U-tube manometer is calculated using:

• Volume × Density × Height

• Gravity × Density × Height

• Area × Velocity × Height

• Temperature × Volume × Height

What is the formula to convert fuel volume to mass?

• Volume × Temperature

• Volume × Density

• Volume ÷ Pressure

• Volume × Viscosity

Why is it important to consider thermal expansion in bunker storage calculations?

• To account for changes in fuel weight

• To prevent overfilling and allow for volume changes with temperature

• To reduce the density of the fuel

• To optimize the pump head

What happens to the fluid level in a U-tube manometer when pressure increases on one side?

• Both sides rise

• Both sides fall

• One side rises, the other falls

• No change