Section 4 - Wave-Making Resistance

Question 1

The wave-making resistance of a ship is the NET FORE-AND-AFT Force upon the ship due to the fluid pressures acting normally on all parts of the hull

Answer 1

Certo

Question 2

the frictional resistance is the result of the
tangential fluid forces

Answer 2

certo

Question 3

No caso de um submarino, a pressão varia ao longo do casco, mas não há formação de ondas

Answer 3

Certo

Question 4

A energia para manter o sistema de ondas é igual à energia para mover o navio contra esse sistema

Answer 4

Certo

Question 5

A Wave-Making Resistance depends in LARGE MEASURE on the shapes adopted for the area curve

Answer 5

Certo

Question 6

A Wave-Making Resistance depends in LARGE MEASURE on the length of the hull

Answer 6

Errado.
on the shapes adopted for the area curve, waterlines and transverse sections,

Question 7

A Wave-Making Resistance depends in LARGE MEASURE on the shapes adopted for the transverse sections

Answer 7

Certo

Question 8

Análise teórica computacional é a ferramenta mais valiosa para determinar a Resistência Formadora de Ondas

Answer 8

Errado.
model tests remain the most important tool avaiable

Question 9

The heights of successive transverse-wave crests along the middle line behind the pressure point increase going af

Answer 9

Errado
diminish going aft

Question 10

The transverse waves meet the divergent waves in cusps, which are the highest points in the system

Answer 10

Certo

Question 11

A altura das cúspides diminui menos rapidamente com a distância do que a altura das ondas transversais

Answer 11

Certo

Question 12

Well astern of the ship, the transverse waves become more proeminent

Answer 12

Errado.
Divergent-waves

Question 13

Near the bow of a ship the most noticeable waves are a series of divergent waves, starting with a small wave at the bow

Answer 13

Errado.
Large wave at the bow

Question 14

As ondas transversais são formadas entre as ondas divergentes, em cada lado do navio

Answer 14

Certo

Question 15

Ao longo da sua linha de cristas, as ondas divergentes tem comprimento bastante pequeno.

Answer 15

Certo.
Quite short length along its crest line

Question 16

The divergent waves are most easily seen along the middle portion of a ship or model with parallel body

Answer 16

Errad

Question 17

The divergent waves are most easily seen just behind a ship running at high speed

Answer 17

Certo

Question 18

The waves in the immediate vicinity of a model are found to be a little shorter

Answer 18

Certo

Question 19

Astern from the ship, the waves attain the length L, about two wave lengths astern

Answer 19

Certo

Question 20

The waves in the immediate vicinity of a
model are found to be a little shorter, but they attain the length L, about two ship lengths astern

Answer 20

Errado.
Two wave lengths

Question 21

At low speeds, resistance is almost wholly viscous in character

Answer 21

Correto

Question 22

A Resistencia Formadora de Ondas é a Força Resultante no sentido longitudinal, devido às pressões perpendiculares ao casco

Answer 22

Certo