MCQOPTIONS
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MCQOPTIONS
This section includes 4791 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1301. |
In Diesel engines, the duration between the time of injection and the time of ignition is called |
| A. | spill cut-off |
| B. | delay period |
| C. | injection period |
| D. | ignition period |
| Answer» C. injection period | |
| 1302. |
If a tyre is designated as 175/65 R14 82 S, then the aspect ratio for the tyre is |
| A. | 175 |
| B. | 65 |
| C. | 14 |
| D. | 82 |
| Answer» C. 14 | |
| 1303. |
An engine has a clearance volume of 100 cm3 and a swept volume of 800 cm3. The compression ratio is |
| A. | 7:1 |
| B. | 8:1 |
| C. | 9:1 |
| D. | 10:1 |
| Answer» D. 10:1 | |
| 1304. |
Toe-in ensures parallel rolling of the wheel thus stabilizing steering in addition to preventing both sides slipping and excessive tyre wear. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 1305. |
The gear shift lever requires two separate motions to shift gears, and the first movement |
| A. | moves the synchronizer |
| B. | selects the synchronizer |
| C. | meshes the gears |
| D. | operates the clutch |
| Answer» C. meshes the gears | |
| 1306. |
The advantage of the fuel injection system over the carburetor system is |
| A. | improved fuel efficiency |
| B. | improved emission |
| C. | improved power output |
| D. | all of these |
| Answer» E. | |
| 1307. |
Which one of the following statements correctly describes the construction of a planetary gear type differential ? |
| A. | The six planetary pinions rotate in constant mesh with the internal gears. |
| B. | One drive shaft is splined to the central gear and the other to the planetary gear. |
| C. | Each planetary pinion gear meshes with both the central gear and the internal gear. |
| D. | The internal gear is fixed to the planetary gear. |
| Answer» C. Each planetary pinion gear meshes with both the central gear and the internal gear. | |
| 1308. |
A petrol engine of a car develops 125 N-m torque at 2700 r.p.m. The car is driven in second gear having gear ratio of 1.75. The final drive ratio is 4.11. If the overall transmission efficiency is 90%, then the torque available at the driving wheels is |
| A. | 8.091 N-m |
| B. | 80.91 N-m |
| C. | 809.1 N-m |
| D. | 8091 N-m |
| Answer» D. 8091 N-m | |
| 1309. |
The component of the oil filter that prevents the passage of metal particles and sludge is |
| A. | element |
| B. | relief valve |
| C. | check valve |
| D. | case |
| Answer» B. relief valve | |
| 1310. |
The engine oil viscosity is defined by __________ ratings. |
| A. | automatic transmission fluid (ATF) |
| B. | society of automotive engineers (SAE) |
| C. | gross vehicle weight (GVW) |
| D. | American petroleum institute (API) |
| Answer» C. gross vehicle weight (GVW) | |
| 1311. |
In comparison to frame type construction, the frameless structure construction of automobiles is economical when produced in __________ numbers. |
| A. | small |
| B. | large |
| Answer» C. | |
| 1312. |
The minimum parking brake force is generally __________ of gross vehicle mass (GVM). |
| A. | 5% |
| B. | 10% |
| C. | 15% |
| D. | 20% |
| Answer» E. | |
| 1313. |
The condition that results in large quantities of HC emission is |
| A. | high temperature combustion |
| B. | incomplete combustion |
| C. | low temperature combustion |
| D. | high atmospheric temperature combustion |
| Answer» C. low temperature combustion | |
| 1314. |
In bending operation, the metal takes the shape of a punch. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 1315. |
The shrinkage allowance for cast iron pattern is |
| A. | 10 mm/m |
| B. | 16 mm/m |
| C. | 20 mm/m |
| D. | 26 mm/m |
| Answer» B. 16 mm/m | |
| 1316. |
A pouring basin acts as a reservoir for the molten metal. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 1317. |
An oxidising flame is obtained when equal volumes of oxygen and acetylene are supplied. |
| A. | True |
| B. | False |
| Answer» C. | |
| 1318. |
A neutral flame is obtained by supplying |
| A. | equal volumes of oxygen and acetylene |
| B. | more volume of oxygen and less volume of acetylene |
| C. | more volume of acetylene and less volume of oxygen |
| D. | none of the above |
| Answer» B. more volume of oxygen and less volume of acetylene | |
| 1319. |
An oxidising process used for aluminium and magnesium articles is called |
| A. | galvanising |
| B. | anodising |
| C. | parkerising |
| D. | sheradising |
| Answer» C. parkerising | |
| 1320. |
Cores are used to |
| A. | form internal cavities in the casting |
| B. | improve mould surface |
| C. | form a part of a green sand mould |
| D. | all of these |
| Answer» E. | |
| 1321. |
The drawing down is a process of __________ the cross-section of a bar. |
| A. | increasing |
| B. | reducing |
| Answer» C. | |
| 1322. |
A file removes the metal during |
| A. | forward stroke |
| B. | return stroke |
| C. | both forward and return strokes |
| D. | none of these |
| Answer» B. return stroke | |
| 1323. |
In a compound die |
| A. | only one operation is performed at each stroke of the ram |
| B. | two or more operations are performed simultaneously at the single stroke of the ram |
| C. | two or more cutting operations are performed at one station of the press in every stroke of the ram |
| D. | both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram |
| Answer» D. both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram | |
| 1324. |
If the sand is too fine, its permeability will be high. |
| A. | True |
| B. | False |
| Answer» C. | |
| 1325. |
A jolt machine is used to |
| A. | ram the sand harder at the pattern face with decreasing hardness towards the back of the mould |
| B. | ram the sand harder at the back of the mould and softer on the pattern face |
| C. | produce uniform sand hardness throughout the mould |
| D. | produce uniform packing of sand in the mould |
| Answer» B. ram the sand harder at the back of the mould and softer on the pattern face | |
| 1326. |
The material which can be best cut with oxygen cutting process is |
| A. | mild steel |
| B. | brass |
| C. | copper |
| D. | aluminium |
| Answer» B. brass | |
| 1327. |
The cold working of metals is carried out |
| A. | at the recrystallisation temperature |
| B. | below the recrystallisation temperature |
| C. | above the recrystallisation temperature |
| D. | at any temperature |
| Answer» C. above the recrystallisation temperature | |
| 1328. |
Shrinkage allowance is made by adding to external dimensions and subtracting from internal dimensions. |
| A. | Agree |
| B. | Disagree |
| Answer» B. Disagree | |
| 1329. |
Lancing is the operation of |
| A. | cutting a sheet of metal in a straight line along the length |
| B. | removal of metal to the desired shape from the edge of a plate |
| C. | cutting a sheet of metal through part of its length and then bending the cut portion |
| D. | bending a sheet of metal along a curved axis |
| Answer» D. bending a sheet of metal along a curved axis | |
| 1330. |
Notching is the operation of |
| A. | cutting a sheet of metal in a straight line along the length |
| B. | removal of metal to the desired shape from the edge of a plate |
| C. | cutting a sheet of metal through part of its length and then bending the cut portion |
| D. | bending a sheet of metal along a curved axis |
| Answer» C. cutting a sheet of metal through part of its length and then bending the cut portion | |
| 1331. |
For welding plates of thickness less than 5 mm, its edges |
| A. | do not require bevelling |
| B. | should be bevelled to a single-V or U-groove |
| C. | should have a double-V or U-groove on one side |
| D. | should have a double-V or U-groove on both sides |
| Answer» B. should be bevelled to a single-V or U-groove | |
| 1332. |
In sheet metal work, the cutting force on the tool can be reduced by |
| A. | grinding the cutting edges sharp |
| B. | increasing the hardness of tool |
| C. | providing shear on tool |
| D. | increasing the hardness of die |
| Answer» B. increasing the hardness of tool | |
| 1333. |
In order to get uniform thickness of the plate by rolling process, one provides |
| A. | camber on the rolls |
| B. | offset on the rolls |
| C. | hardening of the rolls |
| D. | antifriction bearings |
| Answer» B. offset on the rolls | |
| 1334. |
The process extensively used for making bolts and nuts is |
| A. | hot piercing |
| B. | extrusion |
| C. | cold peening |
| D. | cold heading |
| Answer» E. | |
| 1335. |
Loam sand is a mixture of |
| A. | 30% sand and 70% clay |
| B. | 50% sand and 50% clay |
| C. | 70% sand and 30% clay |
| D. | 90% sand and 10% clay |
| Answer» C. 70% sand and 30% clay | |
| 1336. |
A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct? |
| A. | The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction. |
| B. | The upper and bottom rolls rotate in the same direction whereas the middle roll rotate in opposite direction. |
| C. | The bottom and middle roll rotate in the same direction. |
| D. | any one of the above |
| Answer» C. The bottom and middle roll rotate in the same direction. | |
| 1337. |
Cutting and forming operations can be performed in a single operation in a |
| A. | simple die |
| B. | progressive die |
| C. | compound die |
| D. | combination die |
| Answer» E. | |
| 1338. |
The oxy-acetylene gas used in gas welding produce a flame temperature of |
| A. | 1800 C |
| B. | 2100 C |
| C. | 2400 C |
| D. | 3200 C |
| Answer» E. | |
| 1339. |
The teeth of hacksaw blade are bent |
| A. | towards right |
| B. | towards left |
| C. | alternately towards right and left and every third or fourth left straight |
| D. | may be bent in any direction |
| Answer» D. may be bent in any direction | |
| 1340. |
Metal patterns require __________ draft allowance than wooden patterns. |
| A. | more |
| B. | less |
| Answer» C. | |
| 1341. |
The upsetting is a process of |
| A. | increasing the cross-section of a bar |
| B. | reducing the cross-section of a bar |
| C. | joining the two surfaces of metal under pressure after heating |
| D. | bending of a bar |
| Answer» B. reducing the cross-section of a bar | |
| 1342. |
If neutral flame is used in oxy-acetylene welding, both oxygen and acetylene cylinders of the same capacity will be emptied at the same time. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 1343. |
Which of the following material can be used for making patterns ? |
| A. | Aluminium |
| B. | Wax |
| C. | Lead |
| D. | all of these |
| Answer» E. | |
| 1344. |
For cutting brass, the hacksaw blade should have __________ teeth per 25 mm. |
| A. | 14 |
| B. | 24 |
| C. | 32 |
| D. | 40 |
| Answer» B. 24 | |
| 1345. |
In a cold chamber die casting machine, a measured quantity of molten metal is brought in a ladle from the melting pot to a chamber and forced into the closed die-section by applying hydraulic pressure upon the plunger. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 1346. |
The torch used for oxygen cutting is same as for oxy-acetylene welding. |
| A. | Yes |
| B. | No |
| Answer» C. | |
| 1347. |
The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called |
| A. | shearing |
| B. | piercing |
| C. | punching |
| D. | blanking |
| Answer» D. blanking | |
| 1348. |
In die casting, machining allowance is |
| A. | small |
| B. | large |
| C. | very large |
| D. | not provided |
| Answer» E. | |
| 1349. |
The cold chisels are made from |
| A. | cast iron |
| B. | mild steel |
| C. | high speed steel |
| D. | cast tool steel |
| Answer» E. | |
| 1350. |
A moving mandrel is used in |
| A. | wiredrawing |
| B. | tube drawing |
| C. | metal cutting |
| D. | forging |
| Answer» C. metal cutting | |