Skip to main content
Sarkari MCQs Government Exam Question Bank
Menu
Question no. 6471

The internal energy of a gas governed by the Van-der-Waals equation [p + (a/v2)](V – b) = RT depends upon___________________?

Select your answer for: The internal energy of a gas governed by the Van-der-Waals equation [p + (a/v2)](V – b) = RT depends upon___________________?
Show answer

Answer: A. Pressure & temperature

Explanation

According to thermodynamic relations for real gases described by the Van der Waals equation, internal energy is a function of both temperature and specific volume.

Subject
Engineering
Topic
—
Difficulty
medium

Related questions

Q1. Large-scale fires on fuel gas distribution lines are usually extinguished by________________?

Select your answer for: Large-scale fires on fuel gas distribution lines are usually extinguished by________________?
Show answer

Answer: D. Nitrogen

Nitrogen gas is an inert medium used to displace oxygen and smother fires. It reduces local oxygen concentrations below the combustion threshold safely. Nitrogen does not support combustion, making it ideal for gaseous f...

Q2. Water pipes featuring large lengths and diameters are fabricated via____________________?

Select your answer for: Water pipes featuring large lengths and diameters are fabricated via____________________?
Show answer

Answer: C. Semi-centrifugal casting

Semi-centrifugal casting uses rotational centrifugal force combined with gravity. This method is specifically designed to manufacture symmetrical, long hollow pipes. Mold rotation packs the molten metal outward to form u...

Q3. Raising the carbon content in steel results in_________________?

Select your answer for: Raising the carbon content in steel results in_________________?
Show answer

Answer: B. Increasing the ductility transition temperature

Increasing carbon content in steel raises the ductile-to-brittle transition temperature. Higher carbon fractions promote harder microstructures that fracture at higher temperatures. Impact toughness decreases significant...

Q4. Lead is alloyed into 60:40 brass primarily to enhance its_________________?

Select your answer for: Lead is alloyed into 60:40 brass primarily to enhance its_________________?
Show answer

Answer: A. Machinability

Lead is added as a small alloying element to 60:40 brass to improve machinability. Insoluble lead particles act as chip breakers during high-speed cutting operations. This addition reduces tool wear and produces smooth m...

Q5. A high-quality rimming steel typically exhibits_________________________?

Select your answer for: A high-quality rimming steel typically exhibits_________________________?
Show answer

Answer: A. Carbon and silicon should be low

Rimming steel requires very low carbon and silicon contents in the melt. Low carbon and silicon allow controlled gas evolution during ingot solidification. This gas evolution forms a clean, bubble-free outer rim of high...

Q6. Lead is poured into the joint spaces between two _______________ pipes?

Select your answer for: Lead is poured into the joint spaces between two _______________ pipes?
Show answer

Answer: C. Cast iron

Molten lead is poured into joint spaces to seal cast iron pipe connections. The poured lead creates a strong, durable, and watertight spigot-and-socket seal. Caulking the lead ensures the joint withstands internal water...

New!

Mock Test System is now available!

Prepare for your exam with interactive mock tests. Select your subjects, attempt 100 random MCQs against the clock, and see exactly where you stand.

Start Mock Test