Top 25 MCQs on Turbine Supervisory Instrumentation (TSI) for Instrumentation Professionals

Monitoring and safeguarding rotating machinery like steam and gas turbines in process sectors depends much on Turbine Supervisory Instrumentation (TSI). Engineers and instrumentation experts asking to evaluate and expand their knowledge of advanced TSI systems will find this quiz useful. These 25 multiple-choice questions will challenge both conceptual understanding and practical application covering important subjects including vibration monitoring, axial displacement, rotor dynamics, temperature sensors, and protective schemes. Every question has a thorough explanation to improve knowledge. This test will push and hone your abilities whether you are getting ready for a technical interview, certification, or daily operational excellence.

Top 25 MCQs on Turbine Supervisory Instrumentation (TSI) for Instrumentation Professionals

This advanced quiz on Turbine Supervisory Instrumentation (TSI) is intended for process industry professionals. Investigate 25 thorough multiple-choice questions on vibration analysis, displacement sensors, speed detection, and crucial rotating equipment safety techniques. Every response contains a straightforward justification to support knowledge and enhance your practical understand of TSI systems.

1 / 25

What parameter has to be cross-verified with vibration to prevent false trips caused by electrical noise?

2 / 25

In a TSI system, which situation causes a high-high alarm for radial vibration?

3 / 25

An orbit plot is particularly useful for spotting:

4 / 25

Which TSI value indicates misalignment under hot-to-cold turbine conditions?

5 / 25

In TSI, what does a rapid decline in valve position feedback with consistent control signal indicate?

6 / 25

Which TSI signal is most important during validation of the turbine starting sequence?

7 / 25

Usually, what condition does a 1X vibration frequency component suggest in a TSI spectrum analysis?

8 / 25

Typically, rotor bow during startup shows as:

9 / 25

Which turbine event would most likely cause a sudden axial shift seen by TSI?

10 / 25

What is the purpose of keyphasors in TSI systems while evaluating orbit plots?

11 / 25

Where are radial vibration probes often mounted in steam turbines?

12 / 25

A differential expansion measurement over limits usually indicates:

13 / 25

Turning gears (or barring gears) serve what purpose in respect to TSI measurements?

14 / 25

TSI uses what kind of sensor to track position of turbine valve stem?

15 / 25

Usually, a sudden rise in shaft vibration amplitude with a phase shift of about – 180° suggests:

16 / 25

Using XY vibration probes installed at turbine bearings, which of the following situations could be found?

17 / 25

Usually, the conventional trip point for steam turbine overspeed protection is set at:

18 / 25

A TSI system uses a keyphasor probe for:

19 / 25

Usually, what kind of sensor is utilized for differential expansion monitoring?

20 / 25

What is the significance of casing (shell) expansion monitoring in large steam turbines?

21 / 25

Which part is most likely to create shaft eccentricity during a cold startup?

22 / 25

Differential expansion is best defined as:

23 / 25

Often, excessive axial displacement in a turbine shaft is an early sign of what condition?

24 / 25

In a TSI application, what signal does a typical eddy current probe generate?

25 / 25

Usually, what kind of sensor measures eccentricity in turbine rotors as well as radial shaft vibration?

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