Question

Express 1 parsec in terms of metre. Write its order of magnitude.

Answer 1

issued by RDSO. (refer Annexure 1.03). These loads are worked out taking the theoretical site condition and the track geometry specified in the drawings. Actual site condition and the track geometry may differ. The ruling gradient of the section may differ from the declared grade and the section may have curves, the radius of which may be different from the radius taken in the calculation of the assigned load. Further, partial brake binding, capability of an average driver combined with adverse weather condition may affect the actual load that can be hauled by a locomotive in a particular section. Therefore, before the loads of a particular class of locomotive are fixed for various sections, the actual trials with specified loads on these section should be carried out. The trial would ensure the ability of the locomotive to start and haul the nominated load on the ruling gradient.

2. For multiple operation, separate trials should be carried out with 2,3 or 4 locos in multiples as required in actual operation. These need not be exact multiples of loads with a single loco, since the sharing of loads by the locos may not be equal due to various manufacturing tolerances, varying wheel diameters etc.

3. The nominated loads both for single and multiple operation should be determined for each section, loco class-wise and tabulated.

Answer 2

Answer:

16

Explanation:

A number which is in the form $x\times 10^n$. Then the order of magnitude of the number is n.

Where,

$\frac{\sqrt{10}}{10}\leq x < \sqrt{10}\\\Rightarrow 0.316\leq x<3.16$

$1\ pc=\frac {96939420213600000}{\pi}=30856775814913673\ m$

$30856775814913673\ m=3.0856775814913673\times 10^{16}\ m$

Hence, order of magnitude = 16