Steady State Conduction MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Steady State Conduction, a fundamental topic in the field of Heat Transfer. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Steady State Conduction MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Steady State Conduction mcq questions that explore various aspects of Steady State Conduction problems. Each MCQ is crafted to challenge your understanding of Steady State Conduction principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Heat Transfer tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Steady State Conduction MCQs are your pathway to success in mastering this essential Heat Transfer topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Steady State Conduction. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Steady State Conduction knowledge to the test? Let's get started with our carefully curated MCQs!

Steady State Conduction MCQs | Page 4 of 7

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Q31.
A cylindrical cement tube of radii 0.05 cm and 1.0 cm has a wire embedded into it along its axis. To maintain a steady temperature difference of 120 degree Celsius between the inner and outer surfaces, a current of 5 ampere is made to flow in the wire. Find the amount of heat generated per meter length. Take resistance of wire equal to 0.1 ohm per cm of length

a.

150 W/m length

b.

250 W/m length

c.

350 W/m length

d.

450 W/m length

Discuss
Answer: (b).250 W/m length
Q32.
A stainless steel tube with inner diameter₁2 mm, thickness 0.2 mm and length 50n cm is heated electrically. The entire 15 k W of heat energy generated in the tube is transferred through its outer surface. Find the intensity of current flow

a.

52 amps

b.

62 amps

c.

72 amps

d.

82 amps

Discuss
Answer: (a).52 amps
Q33.
The temperature distribution associated with radial conduction through a sphere is represented by

a.

Parabola

b.

Hyperbola

c.

Linear

d.

Ellipse

Discuss
Answer: (b).Hyperbola
Q34.
The thermal resistance for heat conduction through a spherical wall is

a.

(r₂-r₁)/2πkr₁r₂

b.

(r₂-r₁)/3πkr₁r₂

c.

(r₂-r₁)/πkr₁r₂

d.

(r₂-r₁)/4πkr₁r₂

Discuss
Answer: (d).(r₂-r₁)/4πkr₁r₂
Q35.
The rate of conduction heat flow in case of a composite sphere is given by

a.

Q = t₁ – t₂/ (r₂ – r₁)/4πk₁r₁r₂ + (r3 – r2 )/4πk₂r₂r₃

b.

Q = t₁ – t₂/ (r₂ – r₁)/4πk₁r₁r₂ + (r3 – r2 )/4πk₂r₂r₃

c.

Q = t₁ – t₂/ (r₂ – r₁)/4πk₁r₁r₂ + (r3 – r2 )/4πk₂r₂r₃

d.

Q = t₁ – t₂/ (r₂ – r₁)/4πk₁r₁r₂ + (r3 – r2 )/4πk₂r₂r₃

Discuss
Answer: (b).Q = t₁ – t₂/ (r₂ – r₁)/4πk₁r₁r₂ + (r₃ – r₂ )/4πk₂r₂r₃
Q36.
The thermal resistance for heat conduction through a hollow sphere of inner radius r1 and outer radius r2 is

a.

r₂ – r₁/4πk r₁r₂

b.

r₂ /4πk r₁r₂

c.

r₁/4πk r₁r₂

d.

4πk r₁r₂

Discuss
Answer: (a).r₂ – r₁/4πk r₁r₂
Q37.
A spherical vessel of 0.5 m outside diameter is insulated with 0.2 m thickness of insulation of thermal conductivity 0.04 W/m degree. The surface temperature of the vessel is – 195 degree Celsius and outside air is at 10 degree Celsius. Determine heat flow per m² based on inside area

a.

– 63.79 W/m²

b.

– 73.79 W/m²

c.

– 83.79 W/m²

d.

– 93.79 W/m²

Discuss
Answer: (b).– 73.79 W/m²
Q38.
The quantity d t/Q for conduction of heat through a body i.e. spherical in shape is

a.

ln (r2/r1)/2πLk

b.

ln (r2/r1)/πLk

c.

ln (r2/r1)/2Lk

d.

ln (r2/r1)/2πk

Discuss
Answer: (a).ln (r2/r1)/2πLk
Q39.
A spherical vessel of 0.5 m outside diameter is insulated with 0.2 m thickness of insulation of thermal conductivity 0.04 W/m degree. The surface temperature of the vessel is – 195 degree Celsius and outside air is at 10 degree Celsius. Determine heat flow

a.

– 47.93 W

b.

– 57.93 W

c.

– 67.93 W

d.

– 77.93 W

Discuss
Answer: (b).– 57.93 W
Q40.
If we increase the thickness of insulation of a circular rod, heat loss to surrounding due to

a.

Convection and conduction increases

b.

Convection and conduction decreases

c.

Convection decreases while that due to conduction increases

d.

Convection increases while that due to conduction decreases

Discuss
Answer: (d).Convection increases while that due to conduction decreases
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