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This section includes 341 Mcqs, each offering curated multiple-choice questions to sharpen your Dc Machines knowledge and support exam preparation. Choose a topic below to get started.
1. |
The armature of DC motor is laminated to ____________ |
A. | To reduce mass |
B. | To reduce hysteresis loss |
C. | To reduce eddy current loss |
D. | To reduce inductance |
Answer» D. To reduce inductance | |
2. |
If a DC motor is connected to AC supply what will happen then? |
A. | Not run |
B. | Burn |
C. | Run at normal speed |
D. | Run at extremely low speed |
Answer» C. Run at normal speed | |
3. |
In normal dc machines operating at full-load conditions, the most powerful electromagnet is _________ |
A. | Field winding |
B. | Interpole Winding |
C. | Interpole and compensating winding together |
D. | Armature winding |
Answer» B. Interpole Winding | |
4. |
In a DC machine, rectification process is carried out in order to get unidirectional output (DC). This rectification process is carried out by ______________a) Half wave rectifierb) Full wave rectifierc) Mechanical rectificationd) Centre tapped rectifier 6.Which of the following part is used in construction of DC machine but not in AC machine? |
A. | Half wave rectifierb) Full wave rectifierc) Mechanical rectificationd) Centre tapped rectifier 6.Which of the following part is used in construction of DC machine but not in AC machine?a) Armature Winding |
B. | Full wave rectifierc) Mechanical rectificationd) Centre tapped rectifier 6.Which of the following part is used in construction of DC machine but not in AC machine?a) Armature Windingb) Field winding |
C. | Mechanical rectificationd) Centre tapped rectifier 6.Which of the following part is used in construction of DC machine but not in AC machine?a) Armature Windingb) Field windingc) Commutator |
D. | Centre tapped rectifier 6.Which of the following part is used in construction of DC machine but not in AC machine?a) Armature Windingb) Field windingc) Commutatord) ShaftView Answer |
Answer» D. Centre tapped rectifier 6.Which of the following part is used in construction of DC machine but not in AC machine?a) Armature Windingb) Field windingc) Commutatord) ShaftView Answer | |
5. |
In which organizational form would the project manager possess the greatest amount of authority? |
A. | Classical/traditional |
B. | Projectized |
C. | Strong matrix |
D. | Weak matrix |
Answer» C. Strong matrix | |
6. |
Productivity performance variance is equal to: |
A. | Actual Productivity/Planned Productivity |
B. | Planned Productivity/Actual Productivity |
C. | Planned productivity minus actual productivity |
D. | Actual productivity minus planned productivity |
Answer» D. Actual productivity minus planned productivity | |
7. |
During project staffing, the primary role of line management is |
A. | Approving the selection of the project manager |
B. | Approving the selection of assistant project managers |
C. | Assigning functional resources based upon who is available |
D. | Assigning functional resources based upon availability and the skill set needed |
Answer» E. | |
8. |
A tractor has a permissible loaded speed of 200 m/ minute, which can increase by 25% when the load is removed/deposited. Generally, it is operated at 80% of the permissible speed (loaded or unloaded). It works at a location where haul distance is 120 m. Rest allowance per round- trip is taken as 50 seconds on an average. Fixed time per trip, for loading and unloading and turnaround, etc., is 30 seconds. What is its effective cycle time? |
A. | 157 seconds |
B. | 161 seconds |
C. | 173 seconds |
D. | 182 seconds |
Answer» C. 173 seconds | |
9. |
A contractor agreed to build 30 temporary sheds in 90 days at a price of Rs. 10000/unit. Twenty days later, the contractor has finished 8 sheds with an actual total cost ofRs. 85000. What is the status of the project? |
A. | The project is time and cost overrun |
B. | The project is time overrun and cost under run |
C. | The project is time under run and cost overrun |
D. | The project is time and cost under run |
Answer» D. The project is time and cost under run | |
10. |
Consider the following statements:P. Walls of one brick thick are measured in square meters.Q. Walls of one brick thick are measured in cubic meters.R. No deduction in the brickwork quantity is made for openings in walls up to 0.1m2 area.S. For the measurement of excavation from the borrow pit in a fairly uniform ground, deadman are left at suitable intervals.For the above statements, the correct option is |
A. | P – False; Q – True: R – False: S – True |
B. | P – False; Q – True: R – False: S – False |
C. | P – True; Q – False: R – True: S – False |
D. | P – True; Q – False: R – True: S – True |
Answer» E. | |
11. |
A project has 6 activities (A to F) with respective activity durations 7, 5, 6, 6, 8, 4 days. The network has three paths A - B, C – D and E – F. All the activities can be crashed with the same crash cost per day. The number of activities that need to be crashed to reduce the project duration by 1 day is |
A. | 1 |
B. | 2 |
C. | 3 |
D. | 6 |
Answer» D. 6 | |
12. |
Negative value of cost variance (CV) of construction project indicates that project is |
A. | Behind schedule |
B. | Over budget |
C. | Under budget |
D. | On schedule |
Answer» C. Under budget | |
13. |
Cost – benefit studies are essential to |
A. | Assess the total cost of the work |
B. | Ascertain the relevant escalation in price |
C. | Monitor the expenditure |
D. | Evaluate the viability and worthwhileness of taking up the project |
Answer» E. | |
14. |
Consider following statements about need of construction project: |
A. | Site clearance |
B. | Erosion control |
C. | Materials for structure |
D. | All of above |
Answer» E. | |
15. |
If the excavation of earth is done manually then it costs Rs. 80 per m3. A Machine can excavate at a fixed cost of Rs. 60000 plus a variable cost of Rs. 20 per m3. The quantity of earth for which the cost of excavation by machine will be equal to the cost by manual excavation is |
A. | 500 m3 |
B. | 1000 m3 |
C. | 1500 m3 |
D. | 2000 m3 |
Answer» C. 1500 m3 | |
16. |
Main objects of planning are ______ |
A. | Health |
B. | Convenience |
C. | Beauty |
D. | All of above |
Answer» E. | |
17. |
Consider following requirement of documents for agreement to be signed for a construction project:(i) Letter of acceptance(ii) General conditions of contract(iii) Conditions of particular application(iv) Technical specification(v) Drawings(vi) Priced bill of quantitiesWhich one of the following is correct answer? |
A. | i, ii, iv and v only |
B. | ii, iii, iv and v only |
C. | i, iii, iv and v only |
D. | All |
Answer» E. | |
18. |
As a part of safety management in construction projects, which of the following actions is taken? |
A. | Management of disposal of waste from construction site |
B. | Periodic review of performance of workers |
C. | Regular and stipulated inspection of works and machinery/equipments for enforcement of mandatory regulations. |
D. | Control and monitoring cost changes |
Answer» D. Control and monitoring cost changes | |
19. |
Consider the following statements regarding labour welfare:1) Work prompted by mere sympathy and kindness may degenerate and may injure the worker’s sense of self-respect.2) Rapid industrialization on a large scale poses problems in respect of labour and its welfare3) Construction labour is still largely unorganized, and hence, lacks in welfare measures.Which of the above statements are correct? |
A. | 1 and 2 only |
B. | 1 and 3 only |
C. | 1, 2 and 3 |
D. | 2 and 3 only |
Answer» D. 2 and 3 only | |
20. |
High pressure grouting is generally used for concrete in the lining if the rock strata is |
A. | Highly fissured |
B. | Poor |
C. | Likely to get seepage of water |
D. | All of the above |
Answer» E. | |
21. |
A critical path has |
A. | Zero float |
B. | Minimum float |
C. | Maximum float |
D. | Infinite float |
Answer» B. Minimum float | |
22. |
In an excavation of 3,000 cubic meter of common earth for a canal project, 6 men can be effectively employed on the job. If an output of a man is taken as 100 cubic meter per day, the duration of excavation activity will be |
A. | 5 days |
B. | 6 days |
C. | 7 days |
D. | 8 days |
Answer» B. 6 days | |
23. |
A systematic measurement and evaluation of the way in which an organization manages its health and safety programme against a series of specific and attainable standards is called |
A. | Safety inspection |
B. | Safety audit |
C. | Safety plan |
D. | Safety committee |
Answer» C. Safety plan | |
24. |
By performing which of the following functions the construction manager can achieve the project goals?1. Envisioning the task ahead2. Setting targets and monitoring performance3. Motivating the work force4. Building the line supervisors team |
A. | 1, 2 and 4 only |
B. | 1, 2 and 3 only |
C. | 1, 3 and 4 only |
D. | 1, 2, 3 and 4 |
Answer» E. | |
25. |
For roominess, length to width ratio should be |
A. | 1 ∶ 1 to 1 ∶ 5 |
B. | 1.2 ∶ 1 to 1.5 ∶ 1 |
C. | 1.5 ∶ 1 to 2 ∶ 1 |
D. | 1.5 ∶ 1 to 1.75 ∶ 1 |
Answer» C. 1.5 ∶ 1 to 2 ∶ 1 | |
26. |
An activity in a project management network is |
A. | The beginning or end of a specified job |
B. | An element of work entailed in the project |
C. | Represented by a circle in a network with a number in it |
D. | The progress of work up to a certain limit |
Answer» C. Represented by a circle in a network with a number in it | |
27. |
All the tenders received may be rejected if(i) The lowest tenderer has quoted a figure, which is higher than the funds available for the execution of the work(ii) Radical changes in design are found necessary during the interval preceding the opening of the tenders(iii) The minimum number of tenders to assure adequate competition has not been received.(iv) There exists a well-grounded suspicious collusion between tenderers or some other form of the fraud has been detected.Which of the following statements are correct? |
A. | (i) and (ii) |
B. | (iii) and (iv) |
C. | (i), (ii) and (iii) |
D. | (i), (ii), (iii) and (iv) |
Answer» E. | |
28. |
A small project consists of 3 activates P, Q and R to be executed in that sequence. The relationship between Time Duration (in ‘Units’ of time – T) and corresponding total direct cost (C units) for each of the activities, for alternate mutually exclusive possible durations for each activity, are tabulated herewith:P Q R TCTCTC825063408400923573201037510225829512350112159275 For a total duration of 25 units of time, the least total direct cost for the complete project will be |
A. | 965 units |
B. | 950 units |
C. | 940 units |
D. | 925 units |
Answer» E. | |
29. |
Indirect cost due to accidents includes |
A. | Legal charges |
B. | Medical expenses for the injured |
C. | Compensation amount to the injured |
D. | Over time payment to make up the loss of time |
Answer» E. | |
30. |
In handling air-entraining admixtures the beneficial amount of entrained air depends upon certain factors like1. Type and quantity of air-entraining agent2. Water-cement ratio of the mix3. Strength of aggregates4. The extent of compaction of concrete |
A. | 1, 2 and only |
B. | 1, 2 and 4 only |
C. | 1, 3 and 4 only |
D. | 1, 2, 3 and 4 |
Answer» C. 1, 3 and 4 only | |
31. |
Engines used in earthwork equipment are qualified by the power developed under specified conditions. As operating conditions change, the power developed will increase with local ambience, if1. Ambient temperature increases2. Ambient temperature decrease3. Ambient pressure increases4. Ambient pressure decreasesWhich of the above statements are correct? |
A. | 1 and 3 only |
B. | 1 and 4 only |
C. | 2 and 3 only |
D. | 2 and 4 only |
Answer» D. 2 and 4 only | |
32. |
A certain fixed amount from the gross rent or income is set aside annually to accumulate the cost of construction when the building life is over is called: |
A. | insurance |
B. | bad debts |
C. | sinking fund |
D. | repairs fund |
Answer» D. repairs fund | |
33. |
If ‘D’ is the duration ‘ES’ and ‘EF’ are then earliest start and finish times, ‘LS’ and ‘LF’ are latest start and latest finish times, the following relationship holds good. |
A. | F = LF - EF |
B. | IS = LF + D |
C. | LF = LS - ES |
D. | EF = ES + D |
Answer» E. | |
34. |
Items of ‘C’ type are identified for a project using ABC analysis. Which of the following statements are true for them?a. Even rough quantity estimate is sufficientb. Bulk ordering is preferredc. Ordering of EOQ basis is preferredd. Even junior level staff authorized to order |
A. | All of the above |
B. | a, b and d |
C. | Only c |
D. | None of the above |
Answer» C. Only c | |
35. |
Given that the scope of the construction work is well-defined with all its drawings, specifications, quantities and estimates. Which one of the following types of contract would be most preferred? |
A. | EPC contract |
B. | Percentage rate contract |
C. | Item rate contract |
D. | Lump sum contract |
Answer» E. | |
36. |
The main advantage of line organisation, is : |
A. | effective command and control |
B. | defined responsibilities at all levels |
C. | rigid discipline in the organisation |
D. | all the above. |
Answer» E. | |
37. |
The final selection of a construction site, is done by |
A. | departmental representative or user |
B. | local civil authority representative |
C. | representative of engineer authority |
D. | all the above. |
Answer» E. | |
38. |
Residential buildings are treated as |
A. | light construction |
B. | heavy construction |
C. | industrial construction |
D. | private construction. |
Answer» B. heavy construction | |
39. |
PERT analysis is based on |
A. | optimistic time |
B. | pessimistic time |
C. | most likely time |
D. | all the above. |
Answer» E. | |
40. |
PERT is |
A. | an analytic in concept |
B. | limited of event oriented diagrams |
C. | used for research and development projects |
D. | all the above. |
Answer» E. | |
41. |
The highest line of sloping roof, where two oposite slopes meet, is known as |
A. | rafter |
B. | ridge |
C. | crown |
D. | eave. |
Answer» C. crown | |
42. |
The form work from the slabs excluding props, can be removed only after |
A. | 1 day |
B. | 4 days |
C. | 7 days |
D. | 14 days |
Answer» C. 7 days | |
43. |
To stagger vertical joints in successive courses of a wall, a piece of brick is generally used at the end of the course, which is known as |
A. | bat |
B. | header |
C. | stretcher |
D. | closer. |
Answer» E. | |
44. |
The depth of an arch is the distance between |
A. | ground level and springing line |
B. | crown and springing line |
C. | crown and ground level |
D. | intrados and extrados. |
Answer» E. | |
45. |
In clay soil |
A. | swelling and shrinkage characteristics prevail |
B. | consolidation continues even after several years of construction. |
C. | differential settlement is generally prevalent |
D. | all the above. |
Answer» E. | |
46. |
A wall constructed with stones to protect slopes of cuttings in natural ground from the action of weathering agents, is called |
A. | retaining wall |
B. | breast wall |
C. | buttress |
D. | parapet wall. |
Answer» C. buttress | |
47. |
Pick up the correct specification of one-room quarters generally adopted from the following : |
A. | six quarters in a row |
B. | the size of room is either 3.5 m x 3 m or 4.2 m x 2.5 m |
C. | the front verandah is kept 2 m wide. |
D. | all the above. |
Answer» E. | |
48. |
The type of bond in which every course contains both headers and stretchers, is called |
A. | English bond |
B. | Flemish bond |
C. | Russian band |
D. | Mixed bond. |
Answer» C. Russian band | |
49. |
The bearing capacity of granite is generally |
A. | 5 to 10 kg/cm² |
B. | 15 to 20 kg/cm² |
C. | 30 to 35 kg/cm² |
D. | 40 to 45 kg/cm². |
Answer» D. 40 to 45 kg/cm². | |
50. |
For a rectangular foundation of width b, eccentricity of load should not exceed |
A. | b/2 |
B. | b/3 |
C. | b/4 |
D. | b/6. |
Answer» E. | |