Let’s work on questions 20 to 20 from the 2015 First-Class Constructor Examination, specifically the multiple-choice questions 11-12 on Engineering Economics
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I’ve gathered some questions from this year’s First-Class Constructor exam, along with their answers. I’m sharing them here to boost everyone’s interest in participating. Instead of posting them all at once, I’ll present a few multiple-choice questions or one case study at a time, with the answers hidden. The answer will be visible after responding. Everyone is welcome to participate; the moderator will give a reward for correct answers. ****************************************** 11. Among the time losses during the operation of machinery, which one represents the inevitable idle time included in the standard usage rates for machinery? A. The additional time caused by the vehicle not being fully loaded during transportation. B. The time required for the road construction machine to turn around at the end of the work area. C. The downtime resulting from a lack of timely supply of fuel to the machinery. D. The time during heavy rain when the roller is forced to stop working. 【Answer】B 【Expert Explanation】These unavoidable periods of idling time are those that arise due to the characteristics of the construction process and the design of the machinery itself, resulting in the machinery being idle. For example, a road construction machine making a U-turn at the end of the work area counts as part of this time consumption. See page P189 of the textbook. All other options represent time losses and are not part of the time included in the mechanical shift quota at all. 12. If a loan has an annual interest rate of 8% with compounding once every six months, then the effective annual interest rate on this loan is higher than the nominal interest rate. A. 0.16% B. 1.25% C. 4.16% D. 0.64% Answer: A 【Expert Explanation】The formula for calculating the actual interest rate is used here; (1 + 4%)2 – 1 = 8.16%, which is 0.16% higher than 8%. Refer to textbook P8 ；
11. Among the following mechanical working time consumptions, which one represents the inevitable idle time included in the quota for mechanical shift usage? B. Time taken for the road construction machine to turn around at the end of the work area 12. If the annual interest rate on a loan is 8% with compounding semi-annually, then the effective annual interest rate on such a loan is higher than the nominal interest rate. A. 0.16%
11D 12B – the character count does not meet the requirements
11. Among the following mechanical working time consumptions, which one represents the inevitable idle time included in the quota for mechanical shift usage? D. The additional time incurred because the vehicle was not fully loaded when transporting materials. B. The time required for the road construction machine to turn around at the end of the work area. C. The downtime resulting from the lack of timely supply of fuel to the machinery. D. The time during which the roller had to stop operating due to heavy rain. 12. If the annual interest rate on a loan is 8%, with compounding occurring once every six months, then the effective annual interest rate on this loan is higher than the nominal interest rate. A. 0.16% B. 1.25% C. 4.16% D. 0.64% The interest rate for the latter option is (1.04*1.04-1)*100% = 8.16%, so the correct answer is A
11. Among the following mechanical working time consumptions, which one represents the inevitable idle time included in the quota for mechanical shift usage? B. The additional time incurred because the vehicle was not fully loaded when transporting materials. B. The time required for the road construction machine to turn around at the end of the work area. C. The downtime resulting from a lack of timely supply of fuel to the machinery. D. The time during which the roller had to stop operating due to heavy rain. 12. If the annual interest rate on a loan is 8%, with compounding occurring once every six months, then the effective annual interest rate on this loan is higher than the nominal interest rate. A A. 0.16% B. 1.25% C. 4.16% D. 0.64%
11. Among the following mechanical working time consumptions, which one represents the inevitable idle time included in the quota for mechanical shift usage? B. The additional time incurred because the vehicle was not fully loaded when transporting materials. B. The time required for the road construction machine to turn around at the end of the work area. C. The downtime resulting from a lack of timely supply of fuel to the machinery. D. The time during which the roller had to stop operating due to heavy rain. 12. If the annual interest rate on a loan is 8%, with compounding occurring once every six months, then the effective annual interest rate on this loan is higher than the nominal interest rate. A A. 0.16% B. 1.25% C. 4.16% D. 0.64%
11. Among the following mechanical working time consumptions, which one represents the inevitable idle time included in the quota for mechanical shift usage? A. The additional time incurred due to the vehicle not being fully loaded when transporting goods; B. The time required for the road construction machine to turn around at the end of the work area; C. The downtime caused by a lack of timely supply of fuel to the machinery; D. The time during which the roller has to stop operating due to heavy rain. Answer: B. 12. If the annual interest rate on a loan is 8%, with compounding occurring once every six months, then the effective annual interest rate on this loan is higher than the nominal interest rate. A. 0.16% B. 1.25% C. 4.16% D. 0.64% Choose D
11. Among the following mechanical working time consumptions, which one represents the inevitable idle time included in the quota for mechanical shift usage? B. The additional time incurred because the vehicle was not fully loaded when transporting materials. B. The time required for the road construction machine to turn around at the end of the work area. C. The downtime resulting from a lack of timely supply of fuel to the machinery. D. The time during which the roller had to stop operating due to heavy rain. 12. If the annual interest rate on a loan is 8%, with compounding occurring once every six months, then the effective annual interest rate on this loan is higher than the nominal interest rate. A A. 0.16% B. 1.25% C. 4.16% D. 0.64%
11. Among the following mechanical working time consumptions, which one represents the inevitable idle time included in the quota for mechanical shift usage? B. Time for the road construction machine to turn around at the end of the work area
12. If a loan has an annual interest rate of 8% with compounding once every six months, then the effective annual interest rate on this loan is higher than the nominal interest rate. A. 0.16%