Engineering Sciences
2019 · Paper 1
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Complete GATE XE 2019 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 43–45 of 175. Imported answers require review unless explicitly marked reviewed.
Question 22
Open questionXE-BNAT2 marksNeeds review
A jet engine is to be tested on a thrust stand as shown in the figure below. The conditions prevailing in a typical test are as follows: Axial intake air velocity = 100 m/s; axial exhaust gas velocity = 250 m/s; intake cross-sectional area = 1 m
; intake static pressure =
kPa (gauge); exhaust static pressure = 0 kPa (gauge); mass flow rate through the engine = 100 kg/s. The anchoring force (in kN) in axial direction on the thrust stand is ______. 
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Open questionXE-CMCQ1 markNeeds review
On decreasing the objective aperture size in an optical microscope
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Open questionXE-CMCQ1 markNeeds review
Pilling-Bedworth ratios for oxides of some metals are given in the table.\n\n| Metal | Pilling-Bedworth Ratio |\n|---|---:|\n| Li | 0.57 |\n| Ce | 1.16 |\n| Ta | 2.33 |\n| W | 3.40 |\n\nBased on the criterion of Pilling-Bedworth ratio alone, which one of the following metals will be most protected from high temperature oxidation?
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