City Guilds Model Questions Vol1 2024 Engineering Question 2

Practice practical question 2 from the 2024 City Guilds Model Questions Vol1 Engineering examination. This question covers Energy conversion, Specific heat capacity, Thermal efficiency, Error analysis .

City Guilds Model Questions Vol1 2024 Engineering Practical
Topics: Energy conversion Specific heat capacity Thermal efficiency Error analysis
Question 2 CITY_GUILDS_MODEL_QUESTIONS_VOL1 • 2024 • ENGINEERING • practical

In a laboratory, a 2.5 kg block of aluminium is heated using an electric heater rated at 500 W. The heater is switched on for 10 minutes. The initial temperature of the block is 25 °C and after heating the recorded temperature is 85 °C. The specific heat capacity of aluminium is 900 J·kg⁻¹·K⁻¹.

Question Parts

( a )
Calculate the total electrical energy supplied to the heater during the experiment.
( b )
Determine the theoretical temperature rise of the aluminium block if all the electrical energy were transferred to it.
( c )
State the actual temperature rise observed in the experiment.
( d )
Calculate the overall efficiency of the heating process.
( e )
Identify two possible sources of error that could account for the difference between the theoretical and actual temperature rises.

Detailed Solution & Marking Scheme

Get the step-by-step solution, key points required by examiners and detailed marking guidance through the Edcrib AI Tutor.

Reveal Answer

About This Question

This is City Guilds Model Questions Vol1 2024 Engineering Question 2. It is one of the practical questions from the 2024 City Guilds Model Questions Vol1 Engineering examination.

The question covers Energy conversion, Specific heat capacity, Thermal efficiency, Error analysis .

View More City Guilds Model Questions Vol1 2024 Engineering Questions More City Guilds Model Questions Vol1 Practice Questions Back to Questions

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Chat with Support