How do i know the name of these blocks that marked below

Implement model of variable pitch wind turbine - Simulink - MathWorks United Kingdom

Answer 1

[Walter Roberson]

The red one is https://www.mathworks.com/help/simulink/slref/mathfunction.html

The yellow one looks to be a pitch calculation as a MATLAB Function Block; see https://www.mathworks.com/matlabcentral/answers/1840408-wind-turbine-model-block-cp-lambda-beta-function-syntax-error

The black one appears to be a gain block with gain "K" https://www.mathworks.com/help/simulink/slref/gain.html -- however it is possible that something slightly different is meant by "K-"

[Steven Lord]

The Gain block attempts to show the gain factor on the block. If there is not enough space I believe it displays -K- instead.

[Walter Roberson]

Oh, that makes sense!

[Karam Karas]

Thank you so much for your reply.

I found out that i could right click and see it under the Mask.

Answer 2

[Sam Chak]

Hi @Karam Karas

1. Block in yellow circle looks like a Mask, which is a custom user interface for a block, but can be easily constructed using a MATLAB Function block, where the op(lambda, beta) function is written in MATLAB. If it is the latter, the MathWorks logo should appear in the center of the block.
2. Block in red circle looks like the Fcn block (now obsolete) or maybe the Interpreted MATLAB Function block that applies specified expression to input. For less complicated expressions, it can be easily replaced by the Math Function block (that contains many common mathematical functions).
3. Block in black circle is a Gain block (that looks like an Amplifier).