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MCQOPTIONS
This section includes 2670 Mcqs, each offering curated multiple-choice questions to sharpen your Railways knowledge and support exam preparation. Choose a topic below to get started.
| 2351. |
Which one of the following expressions given the rate depreciation by the straight line method? (C = initial cost, S = scrap value, N = life in years). |
| A. | \[D=(C\,-S)N\] |
| B. | \[D=(C\,+S)N\] |
| C. | \[D=C-S\] |
| D. | \[D=C+S\] |
| Answer» B. \[D=(C\,+S)N\] | |
| 2352. |
Consider the following statements: Queuing Theory is used for 1. Inventory problems 2. Traffic congestion studies 3. Job-shop scheduling. Which of the statements given above are correct? |
| A. | 1, 2 and 3 |
| B. | 1 and 2 |
| C. | 2 and 3 |
| D. | 1 and 3 |
| Answer» D. 1 and 3 | |
| 2353. |
Which one of the following forecasting techniques is not suited for making forecasts for planning production schedules in the short range? |
| A. | Moving average |
| B. | Exponential smoothing method |
| C. | Regression analysis |
| D. | Delphi method. |
| Answer» B. Exponential smoothing method | |
| 2354. |
In which one of the following types of industrial activities, the problem of loading and scheduling becomes more difficult? |
| A. | Single-product continuous |
| B. | Multi-product continuous |
| C. | Batch production |
| D. | Continuous or process production |
| Answer» D. Continuous or process production | |
| 2355. |
Match List-I (Types of layout) with List-II (Uses) and select the correct answer using the codes given below the Lists: List-I List-II A. Product Layout 1. Where a large quantity of products is to be produced B. Process Layout 2. Where a large variety of products is manufactured C. Combined Layout 3. Where item is being made in different types of sizes D. Fixed Position Layout 4. Where too heavy or huge item is used as raw Codes: |
| A. | A\[\to \]1, B\[\to \]2, C\[\to \]3, D\[\to \]4 |
| B. | A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 |
| C. | A\[\to \]1, B\[\to \]2, C\[\to \]4, D\[\to \]3 |
| D. | A\[\to \]2, B\[\to \]1, C\[\to \]3, D\[\to \]4 |
| Answer» B. A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 | |
| 2356. |
A set of requirement for a product layout m an industry is: |
| A. | General purpose machine and skilled labour |
| B. | Special purpose machine and skilled labour |
| C. | General purpose machine and unskilled labour |
| D. | Special purpose machine and semi-skilled labour |
| Answer» B. Special purpose machine and skilled labour | |
| 2357. |
Match List-I (Activity) with List-II (Technique) and select the correct answer using the code given below the lists: List-I (Activity) List-II (Technique) A. Line Balancing 1. Value Analysis B. Product Development 2. Exponential Smoothing C. Forecasting 3. Control Chart D. Quality Control 4. Selective Control 5. Rank positive Matrix Codes: |
| A. | A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 |
| B. | A\[\to \]5, B\[\to \]3, C\[\to \]2, D\[\to \]1 |
| C. | A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 |
| D. | A\[\to \]5, B\[\to \]1, C\[\to \]2, D\[\to \]3 |
| Answer» E. | |
| 2358. |
For a product, the forecast for the month of January was 500 units. The actual demand turned out to he 450 units. What is the forecast for the month of February using exponential smoothing method with a smoothing coefficient\[=0.1\]? |
| A. | 455 |
| B. | 495 |
| C. | 500 |
| D. | 545 |
| Answer» C. 500 | |
| 2359. |
Which one of the following methods can be used for forecasting when a demand pattern is consistently increasing or decreasing? |
| A. | Regression analysis |
| B. | Moving average |
| C. | Variance analysis |
| D. | Weighted moving average. |
| Answer» B. Moving average | |
| 2360. |
Which one of the following combinations is valid for product layout? |
| A. | General purpose machine and skilled labour |
| B. | General purpose machine and unskilled labour |
| C. | Special purpose machine and semi-skilled labour |
| D. | Special purpose machine and skilled labour |
| Answer» D. Special purpose machine and skilled labour | |
| 2361. |
During manufacture of cement, the handling of limestone is done by: |
| A. | Belt conveyor |
| B. | Bucket conveyor |
| C. | Overhead came |
| D. | Fork-lift crane. |
| Answer» C. Overhead came | |
| 2362. |
In production, planning and control, the document which authorizes the start of an operation on the shop floor is the: |
| A. | Dispatch order |
| B. | Route plan |
| C. | Loading chart |
| D. | Schedule |
| Answer» E. | |
| 2363. |
Consider the following statements: A process layout 1. Has machines of same functions arranged in a place 2. is suitable for batch production 3. has machines of different functions arranged according to processing sequence 4. is suitable for mass production. Of these statements: |
| A. | 1 and 2 are correct |
| B. | 3 and 4 are correct |
| C. | 2 and 3 are correct |
| D. | 1 and 4 are correct |
| Answer» B. 3 and 4 are correct | |
| 2364. |
Which of the following factors necessitate a change in schedule? 1. Change in Board of Directors 2. Capacity modification 3. Lack of capital 4. Unexpected rush orders Select the correct answer using the codes given below: |
| A. | 2, 3 and 4 |
| B. | 1, 2 and 5 |
| C. | 2, 4 and 5 |
| D. | 1, 3 and 4 |
| Answer» D. 1, 3 and 4 | |
| 2365. |
Several sequencing rules can be used to sequence jobs. The performance of these rules can be studied using several performance measures. Consider the following sequencing rules: SPT (Shortest Processing Time)EDD (Expected Due Date)and the following performance measures: MFT (Mean Flow Time) ML (Mean Lateness) Which one of the following is not correct? |
| A. | SPT minimizes MFT |
| B. | EDD minimizes MFT |
| C. | EDD minimizes ML |
| D. | SPT minimizes ML |
| Answer» E. | |
| 2366. |
Cutting tools are manufactured by |
| A. | High speed steel |
| B. | Nickel steel |
| C. | Chorme steel |
| D. | None of these |
| Answer» B. Nickel steel | |
| 2367. |
Alloy steel as compared carbon steel is more |
| A. | strong |
| B. | tough |
| C. | fatigue resistant |
| D. | All of these |
| Answer» E. | |
| 2368. |
T-joint weld is used |
| A. | where longitudinal shear is present |
| B. | where severe loading is encountered and the upper surface of both pieces must be in the same plane |
| C. | to join two pieces of metal in the same manner as rivet joint metals |
| D. | to join two pieces perpendicularly |
| Answer» B. where severe loading is encountered and the upper surface of both pieces must be in the same plane | |
| 2369. |
The lip angle of a single point cutting tool is; |
| A. | \[10{}^\circ C-30{}^\circ C\] |
| B. | \[30{}^\circ C-60{}^\circ C\] |
| C. | \[50{}^\circ C-60{}^\circ C\] |
| D. | \[60{}^\circ C-80{}^\circ C\] |
| Answer» E. | |
| 2370. |
The purpose of using flux in soldering is to |
| A. | increase fluidity of solder metal |
| B. | fill up gaps left in a bad joint |
| C. | prevent oxides forming |
| D. | lower the melting temperature of the solder |
| Answer» D. lower the melting temperature of the solder | |
| 2371. |
The following flux is used for brazing cast iron |
| A. | mixture of boric acid, borax and wetting agent |
| B. | boric acid, borax or fluoride with a wetting agent |
| C. | chlorides and fluorides mixed with water |
| D. | All of the above |
| Answer» C. chlorides and fluorides mixed with water | |
| 2372. |
Match List-I with List-II and select the correct answer using the code given below the lists: List-I (Turbine Performance Factor) List-II (Definition) A. Reheat factor 1. \[\frac{Adiabatic\,\,heat\,\,drop}{heat\,\,\text{supplied}}\] B. Internal efficiency 2. \[\frac{Total\,\,work\,\,done\,\,on\,\,the\,\,motor}{Total\,\,adiabatic\,\,heat}\] C. Degree or reaction 3. \[\frac{Cumulative\,\,heat\,\,drop\,\,of\,\,all\,\,stages}{Total\,\,adiabatic\,\,heatdrop}\] D. Rankine efficiency 4. \[\frac{Enthalpy\,\,drop\,\,in\,\,moving\,\,blades}{Enthalpy\,\,drop\,\,in\,\,the\,\,stage}\] Codes: |
| A. | A\[\to \]3, B\[\to \]2, C\[\to \]4, D\[\to \]1 |
| B. | A\[\to \]4, B\[\to \]1, C\[\to \]3, D\[\to \]2 |
| C. | A\[\to \]4, B\[\to \]2, C\[\to \]3, D\[\to \]1 |
| D. | A\[\to \]3, B\[\to \]1, C\[\to \]4, D\[\to \]2 |
| Answer» B. A\[\to \]4, B\[\to \]1, C\[\to \]3, D\[\to \]2 | |
| 2373. |
A fast breeder reactor uses which one of the following as fuel? |
| A. | Thorium |
| B. | \[{{U}^{235}}\] |
| C. | Plutonium |
| D. | Enriched uranium |
| Answer» D. Enriched uranium | |
| 2374. |
Consider the following statements: 1. Heat is generated in a nuclear reactor by fission of U-235 by neutron. 2. Percentage of U-238 in natural Uranium is around 0.71. 3. Plutonium is not a naturally occurring nuclear fuel. Which of the statements given above is/are correct? |
| A. | 1 only |
| B. | 2 and 3 only |
| C. | 1 and 3 only |
| D. | 1, 2 and 3 |
| Answer» D. 1, 2 and 3 | |
| 2375. |
Which one of the following gases is normally not used as a coolant in nuclear reactor? |
| A. | Hydrogen |
| B. | Helium |
| C. | Carbon dioxide |
| D. | Nitrogen |
| Answer» B. Helium | |
| 2376. |
Why is enriched Uranium required as fuel when ordinary water is used as a moderator? |
| A. | Ordinary water has low moderating efficiency |
| B. | Ordinary water has high moderating absorption |
| C. | Ordinary water has high moderating efficiency |
| D. | Ordinary water has low neutron absorption. |
| Answer» C. Ordinary water has high moderating efficiency | |
| 2377. |
Consider the following statements in the context of high pressure boilers: 1. The tendency of scale formation is eliminated due to high velocity of water through tubes. 2. The heat transfer coefficient is increased by increasing the velocity of water through tubes. 3. The steam can he raised quickly to meet the variable load. Which of the statements given above are correct? |
| A. | 1 and 2 only |
| B. | 2 and 3 only |
| C. | 1 and 3 only |
| D. | 1, 2 and 3 |
| Answer» D. 1, 2 and 3 | |
| 2378. |
Consider the following statements: 1. Fusible plug is a device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit. 2. Superheater is a device used to increase the temperature of saturated steam without raising its pressure. 3. An economizer decreases the steam raising capacity of boiler Which of the above statements is/are correct? |
| A. | 1 and 2 |
| B. | 2 and 3 |
| C. | 1 only |
| D. | 1, 2 and 3 |
| Answer» B. 2 and 3 | |
| 2379. |
In a coupled separating and throttling calorimeter, 0.9 is the dryness fraction of steam in the separating unit and 0.95 is the dryness fraction in the throttling unit. What is the approximate value of the dryness fraction of the steam sample? |
| A. | 0.855 |
| B. | 0.925 |
| C. | 0.947 |
| D. | 0.95 |
| Answer» B. 0.925 | |
| 2380. |
What is the efficiency of an ideal regenerative Rankine cycle power plant using saturated steam at \[327{}^\circ C\] and pressure 135 bar at the inlet to the turbine, and condensing temperature of \[27{}^\circ C\] (corresponding saturation pressure of 3.6 kPa)? |
| A. | 0.92 |
| B. | 0.33 |
| C. | 0.5 |
| D. | 0.42 |
| Answer» D. 0.42 | |
| 2381. |
Which of the following are fertile materials? |
| A. | \[{{U}^{33}}\] and \[P{{u}^{239}}\] |
| B. | \[{{U}^{238}}\] and \[T{{h}^{239}}\] |
| C. | \[{{U}^{238}}\] and \[T{{h}^{232}}\] |
| D. | \[{{U}^{235}}\] and \[P{{u}^{236}}72\] |
| Answer» D. \[{{U}^{235}}\] and \[P{{u}^{236}}72\] | |
| 2382. |
In steam and other vapour cycles, the process of removing non-condensable is called: |
| A. | Scavenging process |
| B. | Depuration process |
| C. | Exhaust process |
| D. | Condensation process |
| Answer» B. Depuration process | |
| 2383. |
Match List-I (Feature) with List-II (Turbine/ Staging and select the correct answer using the codes given below the lists: List-I (Feature) List-II (Turbine/Staging) A. Single stage impulse turbine 1. Person's turbine B. Pressure compounding 2. de Laval turbine C. Velocity compounding 3. Rateau staging D. Reaction turbine 4. Curtis staging Codes: |
| A. | A\[\to \]4, B\[\to \]1, C\[\to \]2, D\[\to \]3 |
| B. | A\[\to \]2, B\[\to \]3, C\[\to \]4, D\[\to \]1 |
| C. | A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 |
| D. | A\[\to \]2, B\[\to \]1, C\[\to \]4, D\[\to \]3 |
| Answer» C. A\[\to \]4, B\[\to \]3, C\[\to \]2, D\[\to \]1 | |
| 2384. |
If k is the ratio of the rate of production of neutrons to the rate of loss of neutrons, the reactor is called a critical reactor, when: |
| A. | k = 0 |
| B. | 0 < k < 1 |
| C. | k = 1 |
| D. | k >1 |
| Answer» D. k >1 | |
| 2385. |
Match List-I with List-II and select the correct answer using the codes given below the lists: List-I List-II A. Fuel 1. Graphite B. Cladding 2. Natural Uranium C. Coolant 3. Magnox D. Moderator 4. \[C{{O}_{2}}\] Codes: |
| A. | A\[\to \]1, B\[\to \]4, C\[\to \]3, D\[\to \]2 |
| B. | A\[\to \]2, B\[\to \]4, C\[\to \]4, D\[\to \]1 |
| C. | A\[\to \]1, B\[\to \]3, C\[\to \]4, D\[\to \]2 |
| D. | A\[\to \]2, B\[\to \]4, C\[\to \]3, D\[\to \]1 |
| Answer» C. A\[\to \]1, B\[\to \]3, C\[\to \]4, D\[\to \]2 | |
| 2386. |
Which of the following combustion systems requires maximum excess air? |
| A. | Pulverized coal combustion |
| B. | Oil burners |
| C. | Gas burners |
| D. | Chain grate stoker |
| Answer» E. | |
| 2387. |
A nozzle is said to have choked flow when 1. Discharge is maximum. 2. Throat velocity is sonic. 3. Nozzle exit pressure is more than the critical pressure. 4. Discharge is zero Select the correct answer using the codes given below: |
| A. | 1 only |
| B. | 1 and 2 |
| C. | 4 only |
| D. | 1, 2 and 3 |
| Answer» C. 4 only | |
| 2388. |
If the enthalpies at the entry and exit of a nozzle are 3450 kJ/kg and 2800 kJ/kg and the initial velocity is negligible, then the velocity at the exit is: |
| A. | 806.2 m/s |
| B. | 25.5 m/s |
| C. | 36 m/s |
| D. | 1140.2 m/s |
| Answer» E. | |
| 2389. |
In Fast Breeder Reactor: |
| A. | The moderator used is water |
| B. | The moderator used is graphite |
| C. | The moderator used is carbon dioxide |
| D. | No moderator is used. |
| Answer» E. | |
| 2390. |
Economizer is generally placed between: |
| A. | Last superheater/reheater and air preheater |
| B. | Air preheater and chimney |
| C. | Electrostatic precipitators |
| D. | Induced draft fan and forced draft fan. |
| Answer» B. Air preheater and chimney | |
| 2391. |
In a steam power plant, feed water heater is a heat exchanger to preheat feed water by: |
| A. | Live steam from steam generator |
| B. | Hot flue gases coming out of the boiler furnace |
| C. | Hot air from air preheater |
| D. | Extracting steam from turbine |
| Answer» E. | |
| 2392. |
Governing of steam turbines can be done by the following: 1. Nozzle control 2. Throttle control 3. Providing additional valve and passage The correct answer will be: |
| A. | 1, 2 and 3 |
| B. | 1 and 2 only |
| C. | 2 and 3 only |
| D. | 1 and 3 only |
| Answer» B. 1 and 2 only | |
| 2393. |
Match List-I witn List-II regarding nuclear reactor and select the correct answer using the codes given below the lists: List-I List-II A. Moderator 1. U-233 B. Biological shield 2. Hafnium C. Poison 3. Beryllium D. Nuclear fuel 4. Sodium 5. Lead Codes: |
| A. | A\[\to \]3, B\[\to \]2, C\[\to \]5, D\[\to \]1 |
| B. | A\[\to \]4, B\[\to \]5, C\[\to \]2, D\[\to \]3 |
| C. | A\[\to \]3, B\[\to \]5, C\[\to \]2, D\[\to \]1 |
| D. | A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 |
| Answer» D. A\[\to \]4, B\[\to \]2, C\[\to \]1, D\[\to \]3 | |
| 2394. |
Consider the following statements regarding nuclear reactors: 1. A mixture of radioactive materials is used as fuel 2. Spent fuel is reprocessed to recover thorium/ plutonium 3. Control rods are made of zirconium 4. Spent fuel is fully disposed of safely, as waste. Which of these statements are correct? |
| A. | 1 and 2 |
| B. | 3 and 4 |
| C. | 1 and 3 |
| D. | 1, 3 and 4 |
| Answer» D. 1, 3 and 4 | |
| 2395. |
Which one of the following types of nuclear reactor does not require a heat exchanger? |
| A. | Boiling water |
| B. | Pressurized water |
| C. | Sodium-cooled |
| D. | Gas-cooled |
| Answer» D. Gas-cooled | |
| 2396. |
The work output from a reaction turbine stage is 280 kW per kg/s of steam. If the nozzle efficiency is 0.92 and rotor efficiency is 0.90, the isentropic static enthalpy drop will be: |
| A. | 352 kW |
| B. | 347 kW |
| C. | 338 kW |
| D. | 332 kW |
| Answer» D. 332 kW | |
| 2397. |
Steam enters the rotor of a reaction turbine with an absolute velocity of 236 m/s and relative velocity of 132 m/s. It leaves the rotor with a relative velocity of 232 m/s and absolute velocity of 126 m/s. The specific work output is: |
| A. | 36.3 kW |
| B. | 40.1 kW |
| C. | 43.8 kW |
| D. | 47.4 kW |
| Answer» B. 40.1 kW | |
| 2398. |
Shock waves in nozzles would occur while turbines arc operating: |
| A. | At overload conditions |
| B. | At part load conditions |
| C. | Above critical pressure ratio |
| D. | At all off-design conditions |
| Answer» D. At all off-design conditions | |
| 2399. |
Which one of the following gaseous fuels does not have different higher and lower calorific values? |
| A. | Methane |
| B. | Ethane |
| C. | Carbon monoxide |
| D. | Hydrogen |
| Answer» D. Hydrogen | |
| 2400. |
Consider the following: 1. Safety valve 2. Fusible plug 3. Feed water pump 4. Pressure gauge The essential boiler mountings would include. |
| A. | 1, 3 and 4 |
| B. | 3 and 4 |
| C. | 1, 2 and 3 |
| D. | 1, 2 and 4 |
| Answer» E. | |