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Viewing questions 21-30 out of questions

Questions # 21:

Which of the following is a closed-loop controller?

Options:

Time clock schedule controller

Thermostat for an air conditioning unit

Manual dimmer for a light switch

Accelerator pedal in an automobile

Answer

Questions # 22:

If installed without ancillary equipment, photovoltaic power cells generate what type of power?

Options:

Sinusoidal alternating current

Square-wave alternating current

Direct current

Answer

Questions # 23:

You can buy air compressor A for $15,000 or air compressor B for $6,000. Compressor A will cost $10,000 per year to operate. Compressor B will cost $11,500 per year to operate. If both air compressors have a 10-year life and your required return on investment is 12%, which air compressor has the lowest total life-cycle cost?

Options:

Compressor A

Compressor B

Both air compressors have the same life-cycle cost

Answer

Questions # 24:

According to ISO 50001. when performing internal audits on the energy management system in an organization the internal auditor should do which of the following?

SELECT THE CORRECT ANSWER

Options:

Focus on the areas of significant energy use

Review the written procedures related to the area under audit

Assess actual activities as practiced against what the written procedures state

Look for opportunities for energy improvement and to minimize bureaucracy inthe energy management system

All of the above

Answer

Explanation

When conducting internal audits of an Energy Management System (EnMS) in accordance with ISO 50001, auditors are expected to perform several key activities to ensure the system's effectiveness and continual improvement. These activities include:

Focus on Areas of Significant Energy Use:Auditors should prioritize auditing areas that have substantial energy consumption, as improvements in these areas can lead to significant energy performance enhancements.

Review Written Procedures Related to the Area Under Audit:A thorough examination of documented procedures ensures that they align with ISO 50001 requirements and organizational practices. This review helps in identifying any discrepancies between documented procedures and actual practices.

Assess Actual Activities Against Written Procedures:Auditors compare on-ground activities with documented procedures to verify compliance and identify deviations. This assessment ensures that operations are performed as intended and in line with established protocols.

Look for Opportunities for Energy Improvement and Minimize Bureaucracy:Identifying opportunities for enhancing energy performance is a core objective of the audit.Auditors should also aim to streamline the EnMS by reducing unnecessary complexities, thereby making it more efficient and user-friendly.

By encompassing all these activities, internal auditors ensure a comprehensive evaluation of the EnMS, leading to effective energy management and continual improvement. Therefore, the correct answer is E. All of the above.

Questions # 25:

In an ammonia-water absorption chiller, what material is the refrigerant?