Mechanical Engineering
2021 · Paper 2
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE ME 2021 Paper 2 overview, original pages and practice · Timed previous-paper practice
Questions 52–54 of 65. Imported answers require review unless explicitly marked reviewed.
Question 42
Open questionMENAT2 marksNeeds review
A 76.2 mm gauge block is used under one end of a 254 mm sine bar with roll diameter of 25.4 mm. The height of gauge blocks required under the other end of the sine bar to measure an angle of 30° is __________ mm (round off to two decimal places).
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The demand and forecast of an item for five months are given in the table.
Month | Demand | Forecast |
|---|---|---|
April | 225 | 200 |
May | 220 | 240 |
June | 285 | 300 |
July | 290 | 270 |
August | 250 | 230 |
The Mean Absolute Percent Error (MAPE) in the forecast is __________ % (round off to two decimal places)
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 44
Open questionMENAT2 marksNeeds review
A shell and tube heat exchanger is used as a steam condenser. Coolant water enters the tube at 300 K at a rate of 100 kg/s. The overall heat transfer coefficient is 1500 W/m².K, and total heat transfer area is 400 m². Steam condenses at a saturation temperature of 350 K. Assume that the specific heat of coolant water is 4000 J/kg.K. The temperature of the coolant water coming out of the condenser is ____________ K (round off to the nearest integer).
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