What is the key space of a typical Enigma machine that uses three out of five rotors? What is the corresponding key length $($i$.$e$.,$ the exponent value x in the $2$ to the power of x binary representation: $2$x$)?$

In terms of the brute$-$force attacks, is the Germany$$s naval Enigma machine breakable in $1940$s$?$

What is $($are$)$ the basic transformation technique$($s$)$ used in the Enigma machines?

What are the fundamental technical weaknesses of the Enigma machines?

What are the $$known plaintext$$ capability examples that you saw in the movie or articles?

What$$s the basic strategy$/$idea used by Turing$$s bombe $($named $$Christopher$$ in the movie$)$ machines in cracking the Enigma coded messages?