1. Constant speed curve is denoted as ____
a) T
b) V
c) C
d) V
Explanation: The constant speed curve is denoted as ‘c’. It is also called as called as the main characteristic curve. It plays an important role in determining the performance of the turbine.
2. Constant speed curves are ________
a) Scalar quantities
b) Vector quantities
c) Constant quantities
d) Different conditions
Explanation: Constant speed curves detect the performance at different conditions. Constant speed curves are vector quantities.
3. Constant speed is measured _________?.
a) Mechanically
b) Electrically
c) Chemically
d) Thermally
Explanation: Constant speed is measured is measured mechanically by adjusting the flow of fluid using the percentage variations in a sluice gate. It helps in determining the overall efficiency of the turbine.
4. Constant speed curves are determined by the _________
a) Arc length
b) Power
c) Heat
d) Temperature
Explanation: Constant speed curves are determined by the unit arc length. Constant speed is measured is measured mechanically by adjusting the flow of fluid using the percentage variations in a sluice gate. It helps in determining the overall efficiency of the turbine.
5. Which component is necessary for writing the velocity equation?
a) Cos component
b) Sine Component
c) Cos and sine component
d) Independent
Explanation: Both the cosine and sine component are necessary for determining and writing down the equation for the velocity. It also helps to determine the characteristic curves using the equation.
6. Which among the following is not a shape for a curve?
a) Logarithmic curve
b) Helix curve
c) Straight curve
d) Speed curve
Explanation: Speed curve is not a shape of a characteristic curve. Constant speed is measured is measured mechanically by adjusting the flow of fluid using the percentage variations in a sluice gate. It helps in determining the overall efficiency of the turbine.
7. How do we plot points in a curve?
a) Analytical approach
b) General approach
c) Tail approach
d) Head approach
Explanation: The plotting of curves take place in an analytical approach. It is very essential for the plotting of the characteristic points.
8. Plotting sine curve will take place along the _________
a) y axis
b) x axis
c) z axis
d) x and z
Explanation: Plotting sine curve will take place along the x axis. It is the motion of the x-y plane that will occur in space.
9. In analytical approach, dp= __________
a) vdt
b) v
c) dt
d) dx
Explanation: In any sort of analytical approach, the equation for dp = vdt. It takes place when the sine component and cosine components equal to one.
10. The equation is general approach is called as central difference.
a) true
b) false
Explanation: The equation is general approach is called as central difference. All the characteristic curves that specify different parameters in a turbine are drawn with respect to its unit speed.