GATE 2026 PI – Question 62
A job has elements A,B, each observed three times. A times are 20,25,21 s with 105% rating; B times are 19,17,18 s with 90% rating. Add 20% allowances. Find standard output (units/hour, integer).
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Correct answer: 75 to 78
Explanation
Mean observed times are A = 22 s and B = 18 s. Normal time is $22(1.05)+18(0.90)=39.3$ s. Adding 20% gives standard time $39.3(1.20)=47.16$ s/unit. Output is $3600/47.16\approx76.34$, giving **76 units/hour**.