Which type of machine produced the static induced emf? 

The correct answer is option 4): Transformer 

Statically induced emf:

• The emf is induced whenever a conductor is placed in the magnetic field of another conductor without having any relative motion.
• It doesn’t contain any moving parts.
• Transformer works on the production of statically induced e.m.f.

Dynamically induced emf:

• Dynamic Induced emf is generated when a current-carrying conductor cuts the magnetic flux using relative motion.
• It is having rotating parts in it, inducing emf with respect to moving parts is known as dynamic Induced emf.
• Generator works on the production of dynamically induced e.m.f in the conductors.