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GATE ME 2019: Topper's Quiz-6 (App update required to attempt this test)

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Question 1

Elasticity of various materials is controlled by its

Question 2

A wheel of radius 10 cm can rotate freely about its centre. A string is cropped over its rim and is pulled by a force of 5 N. It is found that torque produces an angular acceleration 2 rad/s² in wheel. The moment of inertia of the wheel is _________.

Question 3

The below given fig. is device used for ;

Question 4

For counter flow heat exchanger with one of the fluid remains in its stagnation temperature, the effectiveness of the heat exchanger is 0.643. If overall heat transfer coefficient is 40 W/m²℃ and the smaller heat capacity value is 245 and diameter of the 140 tubes is 20 mm. What will be the length of the tube?

Question 5

The following data is given for a hydrodynamic bearing:
Length to diameter ratio-

1
Journal speed-

1500 rpm
Diametric clearance-

Journal diameter-

50 mm
External load-

6 kN
The value of minimum film thickness variable is 0.4 and corresponding Sommerfeld number is 0.121. The viscosity (in centipoise) of oil that need to be used is

Question 6

In a Lagrangian system, the position of a fluid particle in a flow is described as

and

where t is the time while

and k are constants. The flow is

Question 7

A solid copper ball of mass 0.5 kg when quenched in a water bath at 30⁰C, cools from 530⁰C to 430⁰C in 10 seconds. What will be the temperature (⁰C) of the ball after the next 10 seconds?

Question 8

A manufacturer has the following data regarding a product:
Fixed cost per month = Rs. 50000
Variable cost per unit = Rs. 200
Selling price Per unit = Rs. 300
Production capacity = 1500 units per month
If the production is carried out at 80% of the rated capacity, then the monthly profit (in Rs.) is________

Question 9

The maximum reduction in cross-sectional area per pass (R) of a cold wire drawing process is

where n represents the strain hardening coefficient. For the case of a perfectly plastic material,

Question 10

The central deflection of the uniform bend shown in figure is _________.

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ESE & GATE ME General

Oct 23ESE & GATE ME