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- Question
Which one of the following statements is not correct with regard to heading and hench-ing method of tunnelling.
Options- A. Driving of tunnel is done in two portions of its section
- B. Driving the top portion is done in advance of the bottom portion.
- C. After driving the top portion 3 m to 3.5 m holes are drilled into the head and bench.
- D. The holes in head and bench are loaded together with explosive for blasting.
- E. Firing of head holes is done just before the bench holes are fired.
- Correct Answer
- Firing of head holes is done just before the bench holes are fired.
- 1. Which one of the following methods is generally adopted for tunnelling in firm ground
Options- A. Full face method
- B. Top heading and benching method
- C. Drift method
- D. All the above. Discuss
- 2. The difference of heights of the tunnels above rail tops of BG and MG tracks is kept
Options- A. 0.30 m
- B. 0.45 m
- C. 0.60 m
- D. 0.75 m Discuss
- 3. Forepoling method is generally adopted for tunnelling in :
Options- A. soft ground
- B. firm ground
- C. running ground
- D. None of these. Discuss
- 4. The following tunnels were constructed in different countries for different purposes :
1. Emperor Claudius built the first Roman tunnel
2. The first highway tunnel was constructed in Hungary
3. The first underground railway tunnel was constructed in Great Britain
4. The first navigational tunnel was constructed in France.
The correct chronological development of these tunnels is:
Options- A. 4 1 3 2
- B. 1 4 2 3
- C. 2 3 1 4
- D. 3 2 4 1 Discuss
- 5. Pick up the correct statement from the following during tunnel excavation,
Options- A. Oxygen should not be less than 19.5%
- B. Carbondioxide should not be more than 0.5%
- C. Hydrogen sulphide should not be more than 0.001%
- D. Carbon mono-oxide should not be more than 0.01%
- E. All of the above. Discuss
- 6. Each financial ratio is generally compared by
Options- A. a past ratio calculated from the past financial standard of the firm.
- B. a ratio developed by using the projected financial statement of the firm.
- C. a ratio of some selected firms most progressive and successful at the point of consideration.
- D. All of these Discuss
- 7. The sunk costs include :
Options- A. a past expenditure
- B. an unrecovered balance
- C. an invested capital that cannot be retreived
- D. All of these Discuss
- 8. Pick up the correct statement from the following:
Options- A. The ratios which show profitability in relation to sales and those which show profitability in relation to investment, are called profitability ratios.
- B. The ratio of gross profit and net sales, is called profitability in relation to sales ratio.
- C. The ratio of net profit after taxes to total assests is known as profitability in relation to investment ratio
- D. All of these Discuss
- 9. Which one of the following statements is correct?
Options- A. The number of years required to recover the initial cash investment in a project, is called Pay Back period (PBP).
- B. The discount rate that equates the present value of the expected Net Cash Flows (CFs) with the Initial Cash Outflow (ICO) is known as internal rate of return.
- C. The present value of the proposal's net cash flows, less the proposal's initial cash outflow is known as the Net Present Value (NPV)
- D. All of these Discuss
- 10. In a cash flow series :
Options- A. uniform gradient signifies that an income or disbursement changes by the same amount in each interest period.
- B. Either an increase or a decrease in the amount of a cash flow is called the gradient.
- C. The gradient in the cash flow may be positive or negative.
- D. All of these Discuss
Tunnelling problems
Search Results
Correct Answer: All the above.
Correct Answer: 0.60 m
Correct Answer: soft ground
Correct Answer: 1 4 2 3
Correct Answer: All of the above.
Correct Answer: All of these
Correct Answer: All of these
Correct Answer: All of these
Correct Answer: All of these
Correct Answer: All of these
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