Question 1

Following graph represents          
A)graphical method to find mac
B)graphical method to produce drag
C)graphical method to find lift
D)graphical method to find lift-curve

Accepted Answer

A

Question 2

For wing to be lofted as shown in below figure, what will be the approximated value of MAC?
A)8m from l.e.
B)8m from t.e.
C)12m from l.e.
D)12m from t.e.

Accepted Answer

The Mean Aerodynamic Chord (MAC) is a characteristic dimension of a wing's geometry, essentially representing the average chord length. Without the specific figure mentioned, the general approach to finding the MAC involves understanding the wing's planform and its chord distribution. The MAC's position (from leading edge or trailing edge) depends on the wing's shape and design. Given the options and without a specific figure, it's challenging to provide a detailed explanation. However, if the correct answer is listed as being 8m from the leading edge (l.e.), it suggests a specific wing configuration and chord distribution was described in the figure provided.

Question 3

If wing has MAC of 8m then, what will be the location of aerodynamic centre?
A)2m from l.e.
B)2m from t.e.
C)at l.e.
D)at t.e.

Accepted Answer

The aerodynamic center of a wing is typically located at the quarter chord point, which is 25% of the Mean Aerodynamic Chord (MAC) from the leading edge. For a MAC of 8m, this location would be 2m from the leading edge.

Question 4

Which of the following is correct in terms of the wing layout with twist?
A)incidence at each span station must be considered and chord should be rotated accordingly
B)only untwist airfoils can be used for layout
C)only rotation of chord line is required at c/6 points
D)only chord line should be rotated by reducing length of chord

Accepted Answer

The twist in an aircraft wing, also known as washout, involves adjusting the angle of incidence along the span of the wing. This means that the chord (the straight line between the leading and trailing edges of the wing) at each span station (different points along the wing's length from root to tip) is rotated to a specific angle. This adjustment is crucial for controlling the lift distribution across the wing, improving aerodynamic efficiency, and delaying stall at the wingtips.

Question 5

Which of the following is correct?
A)generally, tip airfoils are selected for stall characteristics
B)always root airfoils are elected for stall characteristics
C)wing twist will increase thrust by engine
D)wing twist is not considered for layout

Accepted Answer

Tip airfoils are often selected for their stall characteristics to ensure that the wing root stalls before the tip, maintaining aileron control during a stall.

Question 6

In linear interpolation method, new airfoil is created as ________________ 
A)weighted average of root and tip airfoil
B)heavier than the root airfoil always
C)higher chord than root always
D)lower chord than tip always

Accepted Answer

In the linear interpolation method, a new airfoil is created as a weighted average of the root and tip airfoil. This method is used to generate intermediate airfoil shapes in a wing or blade by blending the characteristics of the root and tip airfoils based on their relative positions.

Question 7

Which of the following can be considered as inland water transportation?
A)transportation by river
B)transportation by culvert
C)transportation on bridge
D)transportation by barrage

Accepted Answer

Transportation by river is considered inland water transportation because it involves the movement of goods and people within the interior of a country via rivers, which are natural waterways.

Question 8

Which of the following can act as an advantage of water transportation?
A)tides
B)less development
C)costly mode of transportation
D)cheap mode of transportation

Accepted Answer

Water transportation is considered a cheap mode of transportation, especially for bulk goods and long distances, due to lower fuel costs and the ability to carry large volumes of cargo compared to other modes of transport.

Question 9

Goods can be transported within less time.

Accepted Answer

The statement is incomplete and lacks context. Transport time depends on various factors such as distance, mode of transportation, and infrastructure.

Question 10

A basin which can protect water well from the actions of wind and waves can be designated as________           
A)quarry
B)basin
C)harbor
D)port

Accepted Answer

A harbor is specifically designed to offer protection to vessels from wind, waves, and storm, making it the correct choice for a basin that can protect water well from these elements. Ports are facilities for loading and unloading ships but don't inherently offer protection from natural elements.

Question 11

Which of the following is considered in case stable floating condition of ship?
A)vertical measurement
B)horizontal measurement
C)linear measurement
D)draft

Accepted Answer

The draft is the vertical distance between the waterline and the bottom of the hull (keel), which is crucial for determining the stable floating condition of a ship.

Question 12

Which of the following is used as a basis for the classification of harbor?
A)protection
B)placement
C)area
D)climatic condition

Accepted Answer

Protection refers to the level of protection provided by the harbor from waves, currents, and other environmental factors. It is a key factor in determining the suitability of a harbor for different types of vessels and activities.

Question 13

Which of the following will not come under the category of harbor classification?
A)natural harbor
B)semi artificial harbor
C)artificial harbor
D)semi natural harbor

Accepted Answer

The answer of Which of the following will not come...

Question 14

Bombay harbor will come under the classification of ________________ 
A)semi natural harbor
B)artificial harbor
C)natural harbor
D)semi artificial harbor

Accepted Answer

Bombay harbor is classified as a natural harbor, which means it is largely formed by natural geographical features without significant human modification.

Question 15

On what basis a harbor can be designated as natural roadstead?
A)semi artificial harbor
B)artificial harbor
C)navigable channel
D)semi natural harbor

Accepted Answer

A natural roadstead is a semi-natural harbor that is protected from the open sea by a headland or other natural feature.

Question 16

Which of the following harbor areas are having artificial protection?
A)vishakhapatnam port
B)mumbai port
C)kakinada port
D)yanam port

Accepted Answer

The answer of Which of the following harbor areas are...

Question 17

Every port is a harbour.

Accepted Answer

A port is a place where ships can dock and load or unload cargo. A harbour is a sheltered area of water where ships can anchor or dock. So, every port is a harbour, but not every harbour is a port.

Question 18

How many components does a harbour comprise of?
A)5
B)10
C)15
D)20

Accepted Answer

The answer of How many components does a harbour comprise...

Question 19

The solid parallel platform in a harbour with berthing facility on one side only is:
A)pier
B)quay
C)wharf
D)jetty

Accepted Answer

The answer of The solid parallel platform in a harbour...

Question 20

________________ is a type of utility based harbour.
A)river harbour
B)artificial harbour
C)commercial harbour
D)canal harbour

Accepted Answer

A commercial harbour is a type of utility-based harbour designed for trade and commercial activities.

Quiz 3: Transportation and Harbor Engineering

Following graph represents

For wing to be lofted as shown in below figure, what will be the approximated value of MAC?

If wing has MAC of 8m then, what will be the location of aerodynamic centre?

Which of the following is correct in terms of the wing layout with twist?

Which of the following is correct?

In linear interpolation method, new airfoil is created as ________________

Which of the following can be considered as inland water transportation?

Which of the following can act as an advantage of water transportation?

Goods can be transported within less time.

A basin which can protect water well from the actions of wind and waves can be designated as________

Which of the following is considered in case stable floating condition of ship?

Which of the following is used as a basis for the classification of harbor?

Which of the following will not come under the category of harbor classification?

Bombay harbor will come under the classification of ________________

On what basis a harbor can be designated as natural roadstead?

Which of the following harbor areas are having artificial protection?

Every port is a harbour.

How many components does a harbour comprise of?

The solid parallel platform in a harbour with berthing facility on one side only is:

________________ is a type of utility based harbour.