This set of Total Quality Management Multiple Choice Questions & Answers (MCQs) focuses on “Measures of Total Productive Maintenance”.
1. If availability is 85%, performance efficiency is 50%, and the rate of quality products is 98%, then find out the overall equipment effectiveness?
Explanation: Overall equipment effectiveness = Availability * Performance efficiency * Rate of quality products = 0.85 * 0.50 * 0.98 = 42%.
2. What is the quality score if an asset produces 15000 units out of which 500 are defective?
Explanation: Quality score = Number of usable units/Total units = 14500/15000 = 96.67%. It is a useful parameter in the calculation of OEE.
3. A machine that was supposed to run for 10 hours suffers a breakdown and runs only for 9 hours. Calculate availability.
Explanation: Availability=Total run time/Total planned production time = 9/10 = 90%. It is a useful parameter in the calculation of OEE.
4. If the loading time is 400 minutes and downtime is 60 minutes, calculate availability.
Explanation: Availability = ((Loading Time – Down Time)/Loading Time)*100 = ((400-60)/400)*100 = 85%. Availability, Performance Efficiency, and Quality score are required to calculate OEE.
5. If the theoretical cycle time per unit is 0.5 minutes/unit, the number of units is 400, and the operating time is 400 minutes, calculate performance efficiency.
Explanation: Performance efficiency is given by the formula:
((Theoretical cycle time per unit * Number of units)/Operating Time)*100=(0.5*400*100)/400=50%.
6. If the overall equipment effectiveness is 40%, availability 82%, quality score 96%, calculate the performance efficiency?
Explanation: Overall equipment effectiveness = Availability * Performance efficiency * Rate of quality products. Therefore, performance efficiency = (0.40/(0.82*0.96))=50.8%.
7. Improved safety is one of the benefits of implementing TPM.
Explanation: Improved safety is one of the benefits of implementing TPM. The goals of TPM are to aim at zero breakdowns and zero defects.
8. TPM ensures an improved return on investment.
Explanation: TPM ensures an improved return on investment. The approach of TPM to achieve perfect production through equipment maintenance increases equipment productivity.
9. Which of the following is not an advantage of implementing TPM?
a) Improved equipment reliability
b) Reduced equipment downtime
c) Increased equipment downtime
d) Lower maintenance and production costs
Explanation: Improved equipment reliability, reduced equipment downtime, and lower maintenance and production costs are some of the advantages of implementing TPM. The implementation of proper maintenance techniques brings production close to zero breakdowns and zero defects.
10. Which of the following is not an advantage of implementing TPM?
a) Enhanced job satisfaction
b) Zero defects
c) Improved teamwork between operators and maintenance team
d) A decrease in equipment reliability
Explanation: Enhanced job satisfaction, the aim at zero defects, improved teamwork between operators and maintenance team are some of the advantages of implementing TPM. In fact, there is an increase in equipment reliability.
Sanfoundry Global Education & Learning Series – Total Quality Management.
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