Correct Answer : Option (C) :   hydraulic pump space requirements

Explanation : A typical hydraulic system will affect conceptual design based on space requirements for pumps typically. Control surface are located at the wing or at tail section. Lift required at tail will be affected by which type of airfoil is used.

Correct Answer : Option (B) :   simplified hydraulic system

Explaination : A typical hydraulic system is shown. A simplified hydraulic system can be observed in the diagram. As shown in the diagram a simplified hydraulic system includes actuators, feed lines etc. Fuel tank can be located in fuselage, in wing or in tail.

Correct Answer : Option (D) :   generators, transformers, cables, etc

Explanation : A typical electrical system consists of generators, transformers, cables etc. It is used to provide electrical energy. Drag polar is graphical representation of drag. It is used to show relationship between drag and lift.