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# GATE

E&C; CS & IT; Electrical; Mechanical; Civil; Instrumentation; Chemical; Biotech; Life Sci Includes Mocks; Topic wise (Previous Papers); Year wise (Previous Papers); Practice Tests; Engg. Maths; Gen. Aptitude.

# discussions

## GATE preparation for Mechanical Engineering

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.

Narula
Posted 17 hours ago

Wheat (k = 0.5 W/m-K) is stored on the ground (effectively an adiabatic surface) in 5 m thick layers. Air at 20°C contacts the upper surface of this layer of wheat with h = 3 W/m2–K. The temperature distribution inside this layer is given by,

where Ts is the upper surface temperature, T0 is the lower surface temperature, x is measured upwards from the ground, and L is the thickness of the layer. When the temperature of the upper surface is 24°C, what is the temperature of the wheat next to the ground?

## GATE preparation for Electrical Engineering

This thread is dedicated to preparation for Electrical Engineering - EE subject of GATE. You may share questions related to topics like Electrical Machines, Signals and Systems, Power Electronics and Drives, Measurements and Instrument, Analog and Digital Electronics, Electrical Circuit and Fields, Control System, Power Systems etc.

Sandhya
Posted 1 day ago

A 3-phase voltage source inverter is operated in 180o conduction mode. Which one of the following statements is true?

## GATE preparation for Computer Science & Information Technology

This thread is dedicated to preparation for Computer Science & Information Technology - CS section of GATE. You may share questions from topics like Engineering Mathematics, Programming - C / C++, Network Security and Firewall, Java Basics, Digital Logic, Computer Organization and Architecture, Programming and Data Structure, Algorithms, Theory of Computation, Compiler Design, Operating System, Databases, Information Systems and Software, Computer Networks, Web Technologies etc.

Rohan Jeet
Posted 4 days ago

The routing table of a router is shown below:

 Destination Subnet Mask Interface 128.75.43.0 255.255.255.0 Eth0 128.75.43.0 255.255.255.128 Eth1 192.12.17.5 255.255.255.255 Eth2 default Eth3

On which interfaces will the router forward packets addressed to destinations 128.75.43.16 and 192.12.17.10, respectively?

## GATE preparation for Chemical Engineering

This thread is dedicated to preparation for Chemical Engineering section of GATE. You may share questions related to topics like Process Calculations and Thermodynamics, Engineering Mathematics, Chemical Technology, Instrumentation and Process, Chemical Reaction Engineering, Mass Transfer, Heat Transfer, Fluid Mechanics and Mechanical etc.

Sai Srikanth
Posted 16 days ago

The calibration data of a thermocouple with its cold junction at 0°C are given below.

The hot junction of the thermocouple is placed in a bath at 80°C while its cold junction is at 20°C. What is the emf of the thermocouple?

## GATE preparation for Biotechnology

This thread is dedicated to preparation for Biotechnology section of GATE. You may share questions related to topics like Microbiology, Bioinformatics, Recombinant DNA Technology, Molecular Biology and Genetics, Biochemistry etc.

Leena
Posted 18 days ago

A fed batch culture was operated with intermittent addition of glucose solution at a flow rate of

200 ml h–1. The values of Ks,  and D are 0.3 g l–1, 0.4 h–1 and 0.1 h–1 respectively. Determine the concentration of growth limiting substrate (g l–1) in the reactor at quasi-steady state.

## GATE preparation for Electronics and Communication Engineering

This thread is dedicated to preparation for Electronics and Communication Engineering - EC section of GATE. You may share questions related to topics like Digital circuits, Digital Electronics, Electromagnetics, Analog Circuits, Communications, Electronic Devices, Network Graphs, Signals and System, Control System etc.

Raju
Posted 29 days ago

What will be the value of new H(s), if  is considered to be 2?

## GATE preparation for Engineering Mathematics

This thread is dedicated to preparation for Engineering Mathematics section of GATE.

Shivendra Singh
Posted 1 month ago

If three points A, B, C are collinear, whose position vectors are i - 2j - 8k, 5i - 2k and 11i + 3j + 7k respectively, then the ratio in which B divides AC is:

## GATE preparation for Civil Engineering

This thread is dedicated to preparation for Civil Engineering - CE section of GATE. You may share questions related to topics like Steel Structures, Concrete Structures, Soil Mechanics, Surveying, Highway Engineering, Structural Analysis, Environmental Engineering, Irrigation, Structural Engineering, Fluid Mechanics and Hydraulics etc.

Ayush Kumar Rastogi
Posted 1 month ago

Important topics in soil

## GATE preparation for Instrumentation Engineering

This thread is dedicated to preparation for Instrumentation Engineering section of GATE. You may share questions related to topics like Transducers, Analytical, Optical and Biomedical Instrumentation, Measurement, Analog Circuits, Digital Electronics, Control System, Signal and Systems etc.

Sathish Sit
Posted 2 months ago

The seismic mass of an accelerometer oscillates sinusoidally at 100 Hz with a maximum displacement of 10 mm from its mean position. The peak acceleration of the seismic mass is