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GATE preparation for Mechanical Engineering

(242 Posts)

This thread is dedicated to preparation for Mechanical Engineering - ME section of GATE. You may share questions related to topics like Heat Transfer, Thermodynamics, Design, Engineering Mathematics, Machining and Machine Tool, Mechanics, Strength of Materials, Theory of Machines, Metal Casting etc.

Question should not exceed 100 characters.Use add options for multiple choice questions and "Uploadimage/Add related data" for passage text papers.
Question should be at least 10 characters long.
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Edugate405
Shared from GATE Mock Test - 8 (Mechanical E... on 31 Jan, 2019 5:36 PM

Blocks A and B of masses 40 kg and 60 kg, respectively are placed on a smooth surface as shown in the figure and the spring connected between them is stretched a distance 2 m . If they are released from rest, the speeds of both blocks the instant the spring becomes unstreched is (Take k = 150 N/m)

 
VA = 4 m/sec, VB = 3 m/sec
VA = 2 m/sec, VB = − 6 m/sec
VA = 2 m/sec, VB = − 3 m/sec
VA = − 3 m/sec, VB = 2 m/sec
Please type your answer before submitting.
Edugate405
Posted on 31 Jan, 2019 5:36 PM

Correct answer is D)

Gopi
Shared from GATE Mock Test - 3 (Mechanical E... on 29 Jan, 2019 1:46 PM

The rank of a 3 x 3 matrix C (= AB) found by multiplying a nonzero column matrix A of size 3 x 1 and a non-zero row matrix B of size 1 x 3 is

 
0
1
2
3
Please type your answer before submitting.
Gopi
Posted on 29 Jan, 2019 1:46 PM

Answer is 1 not zero

Edugate434
Shared from GATE Mock Test - 10 (ME) on 26 Jan, 2019 10:30 PM

A rectangular plate blocks the end of a freshwater channel as shown in the figure below.

The plate is hinged about a horizontal axis along its upper edge through a point A and is restrained from opening by a fixed ridge at point B. If the width of the plate is b, the force exerted on the plate by the ridge is

 
Please type your answer before submitting.
Edugate434
Posted on 26 Jan, 2019 10:30 PM

Can you give explanation

Abhi Adsul
Shared from GATE-2017 (ME) Set-II on 21 Jan, 2019 7:43 PM

A steel bar is held by two fixed supports as shown in the figure and is subjected to an increases of temperature ΔT = 100oC and 200GPa, respectively, the magnitude of thermal stress (in MPa) induced in the bar is __________

Please type your answer before submitting.
Abhi Adsul
Posted on 21 Jan, 2019 7:43 PM

Printing error alpha not given.

Gourab Chakraborty
Shared from GATE Mock Test - 5 (Mechanical E... on 19 Jan, 2019 12:03 PM

A 20 kW pump is used to raise water to a 25 m height at a rate of 50 L/s. If the irreversible head loss of the piping system is 7 in, the mechanical efficiency ( in %age) of the pump is ______. (Answer up to one decimal place)

 
78.5%
75.8%
7.85%
87.5%
Please type your answer before submitting.
Gourab Chakraborty
Posted on 19 Jan, 2019 12:03 PM

Why inch is not converted into m ans is wrong