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BARC ME Live Quiz Session Solution (@ 14th March)

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Question 1

The magnitude of the component of velo-city at point (1, 1) for a stream function

is equal to

Question 2

Two pipes of same length L/2 and diameters d and 2d respectively are connected in series. The diameter of an equivalent pipe of the length L is

Question 3

If stress values is measured during the tensile test, then which of the following have higher actual value than initial value?

Question 4

A heat pump is used for domestic heating between a cold room at –4 °C and the water in radiator system at 74 °C. What is minimum electrical power consumption (in kW) provide a heat output of 2000 MJ/day?

Question 5

Two metallic plates of 5 mm thickness are being spot welded using 6 mm diameter electrode. The interface at contact has a resistance of 0.0012 ohm. A current of 1500 A is passed for 0.5 sec. The heat generated in welding process that results in welding is

Question 6

A force F=2 N is applied on a block of mass 0.5 kg as shown in the figure. The block is constrained to move along the horizontal direction in the way. The distance (in meters) travelled by the block in 2sec starting from rest is (Neglect friction between the block and the way)

Question 7

If the expected time for completion of a project is 10 days with a standard deviation of 2 days, the expected time of completion of the project with 99.9% probability is

Question 8

A full journal bearing with a journal of 75 mm diameter and a bearing of 100 mm length is subjected to a radial load 3000 N at 500 rpm. If the viscosity of oil is 18 centipoise then the bearing modulus is ____ × 10^-7

Question 9

A cylindrical pin fin of diameter 5 cm and length 20 cm with negligible heat loss from the tip has an efficiency of 0.5. The effectiveness of this fin is _____.

Question 10

In a counter flow heat exchanger the ratio of masses of the hot and cold fluid is 2:1 and their ratio of specific heat is 1:3 respectively. Hot fluid enters at 80°C and leaves the heat exchanger at 50°C. Cold fluid enter at 40°C and exit at some temperature. Find the exit temperature (in °C) of the cold fluid.

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ESE & GATE ME General

Oct 23ESE & GATE ME