MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 2460 Mcqs, each offering curated multiple-choice questions to sharpen your Advanced Machining knowledge and support exam preparation. Choose a topic below to get started.
| 651. |
The graph of the cumulative values of water quantity against time is known as __________ |
| A. | Flow curve |
| B. | Power curve |
| C. | Mass curve |
| D. | Load curve |
| Answer» D. Load curve | |
| 652. |
What is the volume of rainfall in day sec-meters if 6.5cm rainfall occurs over an area of 2400 sq.km? |
| A. | 1805.56 day sec meter |
| B. | 1225 day sec meter |
| C. | 895 day sec meter |
| D. | 1555.22 day sec meter |
| Answer» B. 1225 day sec meter | |
| 653. |
What AEP stand for in hydrology? |
| A. | Annual exceedance probability |
| B. | Annual energy production |
| C. | Annual exceedance period |
| D. | Automatic engagement panel |
| Answer» B. Annual energy production | |
| 654. |
Determine the pondage factor if the plant is working at time of 8 hrs? |
| A. | 2.5 |
| B. | 3.8 |
| C. | 1 |
| D. | 3 |
| Answer» E. | |
| 655. |
Find out the total flow volume in day sec meter for the average daily stream flow for 7 days? |
| A. | 820 day sec meter |
| B. | 95 day sec meter |
| C. | 200 day sec meter |
| D. | 524 day sec meterView Answer |
| Answer» B. 95 day sec meter | |
| 656. |
Determine the power developed, IF given data is H = 150m, ng = 0.91, nt = 0.86 and Q is 9639.8? |
| A. | 74MW |
| B. | 75MW |
| C. | 76MW |
| D. | 78MW |
| Answer» B. 75MW | |
| 657. |
Determine the flow rate of water, if the catchment area of hydroelectric power is 2500 km2, with an average rainfall of 160cm. the percolation and evaporation losses account for 19%? |
| A. | 9639.8 M3/s |
| B. | 42.8 M3/s |
| C. | 859.63 M3/s |
| D. | 2342 M3/s |
| Answer» B. 42.8 M3/s | |
| 658. |
Cusec is___________ |
| A. | A unit of flow equal to one cubic feet per sec |
| B. | A unit of flow equal to one centimeter cube per sec |
| C. | A unit of flow equal to one meter per sec |
| D. | A unit of flow equal to one cubic foot per sec |
| Answer» B. A unit of flow equal to one centimeter cube per sec | |
| 659. |
1600 V rated 8 SCRs are connected in series. The operation voltage of the string is 4400. Calculate the string efficiency. |
| A. | 34.37 % |
| B. | 30.15 % |
| C. | 38.48 % |
| D. | 35.84 % |
| Answer» B. 30.15 % | |
| 660. |
Calculate the average value of thyristor current in 3-Φ Full wave converter for the load current=729 A and α=3°. |
| A. | 254 A |
| B. | 285 A |
| C. | 247 A |
| D. | 243 A |
| Answer» E. | |
| 661. |
Calculate the r.m.s value of thyristor current in 3-Φ Full wave converter for the load current=2 A and α=59°. |
| A. | 1.15 A |
| B. | 2.55 A |
| C. | 2.07 A |
| D. | 2.89 A |
| Answer» B. 2.55 A | |
| 662. |
Calculate the phase voltage for 3-∅ 120° VSI if the value of DC supply is 78 V. |
| A. | 30.45 V |
| B. | 15.18 V |
| C. | 31.84 V |
| D. | 48.15 V |
| Answer» D. 48.15 V | |
| 663. |
Calculate the line voltage for 3-∅ 120° VSI if the value of DC supply is 96 V. |
| A. | 68.25 V |
| B. | 67.87 V |
| C. | 66.25 V |
| D. | 62.14 V |
| Answer» C. 66.25 V | |
| 664. |
Calculate the rotational kinetic energy of the object using the data: I=5 Kg-m2, ω=25 rad/sec. |
| A. | 1.46 KJ |
| B. | 1.56 KJ |
| C. | 2.58 KJ |
| D. | 3.15 KJ |
| Answer» C. 2.58 KJ | |
| 665. |
Calculate Kinetic energy of the object of mass = 7 Kg moving in a straight line with a velocity of 12 m/s. |
| A. | 504 J |
| B. | 502 J |
| C. | 503 J |
| D. | 509 J |
| Answer» B. 502 J | |
| 666. |
Calculate the maximum fluctuation of speed using the data: Vmax=23 m/sec, Vmin=13 m/sec. |
| A. | 12 |
| B. | 10 |
| C. | 14 |
| D. | 15 |
| Answer» C. 14 | |
| 667. |
Calculate the coefficient of fluctuation of speed using the data: Vmax(Fluctuation)=25 m/sec, Vmean=12 m/sec. |
| A. | 2.08 |
| B. | 2.16 |
| C. | 2.34 |
| D. | 2.74 |
| Answer» B. 2.16 | |
| 668. |
Energy is stored in Flywheel in the form of __________ |
| A. | Kinetic energy |
| B. | Electrical energy |
| C. | Solar energy |
| D. | Wind energy |
| Answer» B. Electrical energy | |
| 669. |
Flywheel is analogous to ___________ |
| A. | Chemical battery |
| B. | Mechanical battery |
| C. | Nuclear battery |
| D. | Electrostatic battery |
| Answer» C. Nuclear battery | |
| 670. |
Full form of IGBT is ___________ |
| A. | Insulated gate bipolar transistor |
| B. | Insulated gate bipolar transducer |
| C. | Insulator gate bidirectional transducer |
| D. | Insulated gate bidirectional transistor |
| Answer» B. Insulated gate bipolar transducer | |
| 671. |
Full form of KERS is ___________ |
| A. | The kinetic energy recovery system |
| B. | The kinetic ever recovery system |
| C. | Kin ever recovery system |
| D. | The kinetic energy recovery store |
| Answer» B. The kinetic ever recovery system | |
| 672. |
Short circuit problem is severe in case of current source inverter. |
| A. | True |
| B. | False |
| Answer» C. | |
| 673. |
Rectifiers are used to convert DC power into variable AC power. |
| A. | True |
| B. | False |
| Answer» C. | |
| 674. |
The injector nozzle of a compression ignition engine is required to inject fuel at sufficiently high pressure in order to __________ |
| A. | inject fuel in a chamber of high pressure at the end of the compression stroke |
| B. | inject fuel at a high velocity to facilitate atomization |
| C. | ensure that penetration is not high |
| D. | all of the mentioned |
| Answer» E. | |
| 675. |
In compression ignition engines, swirl denotes a __________ |
| A. | haphazard motion of the gases in the chamber |
| B. | rotary motion of the gases in the chamber |
| C. | radial motion of the gases in the chamber |
| D. | none of the mentioned |
| Answer» C. radial motion of the gases in the chamber | |
| 676. |
In a petrol engine, the mixture has the lowest pressure at the __________ |
| A. | beginning of suction stroke |
| B. | end of suction stroke |
| C. | end of compression stroke |
| D. | none of the mentioned |
| Answer» C. end of compression stroke | |
| 677. |
Number of working strokes per min. for a four stroke cycle engine are ____________ the speed of the engine in r.p.m. |
| A. | equal to |
| B. | one-half |
| C. | twice |
| D. | four-times |
| Answer» C. twice | |
| 678. |
The power actually developed by the engine cylinder of an I.C. engine is known as __________ |
| A. | theoretical power |
| B. | actual power |
| C. | indicated power |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 679. |
The indicated mean effective pressure of an engine is obtained from the indicator diagram drawn with the help of an engine indicator. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 680. |
The thermal efficiency of a petrol engine is ____________ as compared to diesel engine. |
| A. | same |
| B. | less |
| C. | more |
| D. | none of the mentioned |
| Answer» C. more | |
| 681. |
Non-ferrous metals have fatigue ratio of 0.35. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 682. |
With increase in stacking fault energy, fatigue strength of material __________ |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | First Increases and then decreases |
| Answer» C. Remains constant | |
| 683. |
For steel, fatigue strength is __________ of tensile value. |
| A. | Twice |
| B. | Thrice |
| C. | Half |
| D. | Quarter |
| Answer» D. Quarter | |
| 684. |
What decreases fatigue life? |
| A. | C in steel |
| B. | Polishing |
| C. | Strain ageing |
| D. | Porosity |
| Answer» E. | |
| 685. |
Which element has a maximum effect on fatigue strength in steel? |
| A. | Ni |
| B. | Ag |
| C. | C |
| D. | Au |
| Answer» D. Au | |
| 686. |
The stress-strain relationship for viscous components is given by ________ |
| A. | η.E є |
| B. | E є |
| C. | |
| D. | |
| Answer» D. | |
| 687. |
A series connection between a Hookean spring and a Newtonian dashpot results is ________ model. |
| A. | Maxwell |
| B. | Kelvin-Voigt |
| C. | Standard linear solid model |
| D. | Prony series |
| Answer» B. Kelvin-Voigt | |
| 688. |
The ability of a material to return to its original state when an external force is removed is called __________ |
| A. | Plasticity |
| B. | Elasticity |
| C. | Pseudo-elasticity |
| D. | Resilience |
| Answer» C. Pseudo-elasticity | |
| 689. |
The reactive power output of a synchronous generator is limited by _________ |
| A. | armature current and field current |
| B. | field current and load angle |
| C. | load angle and excitation |
| D. | armature current only |
| Answer» B. field current and load angle | |
| 690. |
In a 3-phase cylindrical-rotor alternator, synchronous reactance is sum of _____________ |
| A. | mutual and leakage reactance |
| B. | magnetizing and leakage reactance |
| C. | magnetizing and mutual reactance |
| D. | mutual, magnetizing and leakage reactance |
| Answer» B. magnetizing and leakage reactance | |
| 691. |
Consider a 3-phase cylindrical-rotor alternator. |
| A. | A, B, D |
| B. | A, C, DC) B, DD) C, DView Answer |
| Answer» B. A, C, DC) B, DD) C, DView Answer | |
| 692. |
A synchronous machine with its field winding on rotor and polyphase armature winding on stator. At steady state running condition, its air gap field is? |
| A. | rotating at synchronous speed w.r.t. stator |
| B. | stationary w.r.t. rotor |
| C. | rotating in the direction of the rotor rotor rotation |
| D. | all of the mentioned |
| Answer» B. stationary w.r.t. rotor | |
| 693. |
A synchronous machine with its field winding on stator and polyphase armature winding on rotor. At steady state, its air gap field is? |
| A. | I, II, III |
| B. | I |
| C. | II, III |
| D. | II, IView Answer |
| Answer» B. I | |
| 694. |
The given variable losses are 5kW fr a 500 KVA, 11 kV, 3-phase star connected alternator having armature resistance of 4 ohms. Calculate the full load armature current per phase. |
| A. | 26.24 A |
| B. | 20.41 A |
| C. | 79 A |
| D. | 40 A |
| Answer» B. 20.41 A | |
| 695. |
The given variable losses are 5kW fr a 500 KVA, 11 kV, 3-phase star connected alternator having armature resistance of 4 ohms. Calculate the current at which maximum efficiency occurs? |
| A. | 20.4A |
| B. | 10.2A |
| C. | 40A |
| D. | 26A |
| Answer» B. 10.2A | |
| 696. |
A 100 KVA, 400V, 3-phase, star connected alternator due to following data The voltage applied to the field winding is 220V. Efficiency at full load is? |
| A. | 97% |
| B. | 96.5% |
| C. | 92% |
| D. | 95%View Answer |
| Answer» B. 96.5% | |
| 697. |
A 100 KVA, 400V, 3-phase, star connected alternator due to following data: The voltage applied to the field winding is 220V. The load losses at full load is? |
| A. | 1033W |
| B. | 500W |
| C. | 540W |
| D. | 940WView Answer |
| Answer» B. 500W | |
| 698. |
A 100 KVA, 400V, 3-phase, star connected alternator due to following data: The voltage applied to the field winding is 220V. The efficiency of the machine at half load is? |
| A. | 96.7% |
| B. | 95% |
| C. | 94.2% |
| D. | 97View Answer |
| Answer» B. 95% | |
| 699. |
A 100 KVA, 400V, 3-phase, star connected alternator due to following data: The voltage applied to the field winding is 220V. The field current loss will be? |
| A. | 270W |
| B. | 258W |
| C. | 480W |
| D. | 250WView Answer |
| Answer» B. 258W | |
| 700. |
A 100 KVA, 400V, 3-phase, star connected alternator due to the following data: The voltage applied to the field winding is 220V. The short circuit load loss at half full load is? |
| A. | 258W |
| B. | 268W |
| C. | 480w |
| D. | 340WView Answer |
| Answer» B. 268W | |