Engineering Sciences
2026 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE XE 2026 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 94–96 of 197. Imported answers require review unless explicitly marked reviewed.
Question 94
Open questionXE-EMSQ1 markNeeds review
Which of the following is/are example(s) of a pure substance at 25 °C and 101 kPa?
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Open questionXE-ENAT1 markNeeds review
A house looses heat at a rate of 150 MJ per hour. The temperature outside the house is −3 °C. The minimum power (in kW) required to maintain the temperature inside the house at 25 °C using a heat pump is ____________ (rounded off to two decimal places).
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Open questionXE-ENAT1 markNeeds review
Consider an ideal Otto-cycle with cold-air-standard assumptions to be applicable. The temperature of the working fluid at the start and the end of the compression process is 300 K and 750 K, respectively. For the working fluid take the ratio of the specific heat capacities as 1.4. The thermal efficiency (in %) of the cycle is __________________ (rounded off to two decimal places).
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