Max R

Looking for any suggestions, thinking natural attractions, though a famous pub or something would be just as good. I do have a fairly capable 4x4 so off road destinations aren't out of the question. Cheers

why?

Hey I recently purchased a 1990 Suzuki Bandit (Slingshot) 250cc. Took it for a test ride and seemed to go all good (the guy had it running on arrival most likely to warm it up) but as soon as I got it home it started having a few issues. It cut out when the rev's dropped, refused to idle and struggled taking off without a heap of rev's. It rides fine when it's going though and will even idle fine occasionally but sometimes it'll drop revs and cut out again (hot or cold and repetitively). I've just added some fuel cleaner to the fuel and am considering trying to spray down the carbies but as it is a fairly old bike with relatively high k's (~48000) for a 250cc, I'm worried it might have something to do with timing (cam chain etc). Would it more likely be the fuel system ie cabies in need of cleaning or balance or could it be something more sinister?

Trying to change the fork oil seals and have no owners manual. Can't seem to find the capacity anywhere online.

Water flows at a rate of 20 l/s through a horizontal pipe whose diameter is constant at 3

cm. The pressure drop across a valve in the pipe is measured to be 2 kPa. Determine the

irreversible head loss of the valve, and the useful pumping power needed to overcome

the resulting pressure drop.

Determine the dynamic viscosity of flow if the pressure drop of a fluid running with a flow rate

of 880 mm

3

/s through a pipe 1 m in length with a diameter of 0.5 mm is 1 MPa

a. 7.98 * 10

-4

Ns/m

2

b. 9.23 * 10

-4

Ns/m

2

c. 1.43 * 10

-3

Ns/m

2

d. 1.74 * 10

-3

Ns/m

2

Which of the following about fully developed laminar flow is false

a. Each particle moves at a constant axial velocity

b. The velocity profile remains unchanged in the flow direction

c. Acceleration can occur provided it is uniform and the flow remains laminar

d. The velocity in the direction normal to the flow is zero

In laminar flow the entrance length for a pipe of radius 3 cm with water at 1 cm/s as the flowing

fluid (dynamic viscosity of 7.98 * 10

-4

Ns/m

2

) is closest to

a. 34 cm

b. 1.8 m

c. 2.3 m

d. 3.4 m

The energy grade line in relation to the hydraulic grade line is

a. always greater

b. always greater than or equal to

c. always less

d. always less than or equal to

The main line of a “tee” junction is 20 cm in diameter and the branch is 10 cm in diameter. A

steady flow of water at 25 degrees Celcius enters the main pipe with an average velocity of 3 m/s

and leaves the main pipe with an average velocity of 1.75 m/s. Find the volume flow rate in the

branch line.

a. 0.001 m

3

/s

b. 0.015 m

3

/s

c. 0.039 m

3

/s

d. 0.156 m

3

/s

Which of the following is not a form of mechanical energy

a. Kinetic energy

b. Potential energy

c. Thermal energy

d. None of the above

A non-uniform steady incompressible flow is observed to have a velocity of 15 m/s at a point

where the cross-sectional area is 10 cm

2

, what is the cross-sectional area when the velocity is 11

m/s?

a. 7.33 cm

2

b. 13.6 cm

2

c. 15.3 cm

2

d. 9.67 cm

a. When a jet of fluid strikes a stationary flat plate, it does not rebound but flows over the plate in

all radial directions

b. The impingement of the jet on the plate surface reduces the component of jet velocity normal

the plate surface to zero

c. The fluid is accelerated from zero in the radial directions

d. There is more than one force produced on the plate

In fully developed laminar flow in a pipe the velocity profile can be described as being

a. Parabolic

b. Flat apart from at the walls

c. Completely dependent on the roughness of the pipe wall

d. 1.5 times faster at the centerline than the average velocity

Which of the following statements is incorrect

a. A streamtube is a series of streamlines drawn through every point on the perimeter of a small

cross-sectional area

b. As streamlines are everywhere parallel to the local velocity, fluid cannot cross a streamtube by

definition

c. Fluid within a streamtube must remain there and cannot cross the boundary of a streamtube

d. Just like streaklines, streamtubes are a time integrated quantity

Which of the following is true

a. A streakline is a time exposed flow path of an individual particle over some period of time

b. A streamline represents an instantaneous flow pattern at a given time

c. A pathline is an instantaneous snapshot of a time integrated flow pattern

d. None of the above

Determine the resultant force per metre on a dam wall 20 m high if the water level is at 14 m

a. 1.72 MN/m

b. 961.4 kN/m

c. 760.4 kN/m

d. 3.44 MN/m

What will a totally immersed neutrally buoyant body lowered to an arbitrary depth in an

incompressible fluid do when left alone?

a. Sink to the bottom

b. Sink part of the way to the bottom then stop

c. Remain where it is

d. Rise to the surface

An open beaker, atmospheric pressure of 101.325 kPa, has a layer of mercury 20 cm and a layer

of water 15 cm. What is the pressure at the bottom of the beaker?

a. 28.0 kPa

b. 67.8 kPa

c. 129.5 kPa

d. 178.2 kPa