The correct matching of engineering applications and types of engineering drawings is as follows:

• A) Plan, front elevation of homes to be built, foundation drawings - S) Civil Engineering drawings: Civil engineering deals with the design, construction, and maintenance of the physical and naturally built environment, including structures like homes. Plans, elevations, and foundation drawings are fundamental to civil engineering projects.
• B) Circuit diagrams and Electrical installation drawings - R) Electrical Engineering drawings: Electrical engineering involves the study and application of electricity, electronics, and electromagnetism. Circuit diagrams and electrical installation drawings are crucial for electrical systems design and implementation.
• C) PCB tracks drawings - Q) Electronics Engineering drawings: Printed Circuit Board (PCB) tracks are part of electronics engineering. Electronics engineering focuses on the design and development of electronic circuits and systems.
• D) Riveted joints and Welded joints - P) Mechanical Engineering drawings: Mechanical engineering deals with the design, manufacturing, and operation of mechanical systems. Riveted and welded joints are common features in mechanical engineering designs, requiring detailed drawings for accurate construction.

Therefore, the correct answer is A-S; B-R; C-Q; D-P.