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.
| 4701. |
The purpose of a riser is to |
| A. | deliver molten metal into the mould cavity |
| B. | act as a reservoir for the molten metal |
| C. | feed the molten metal to the casting in order to compensate for the shrinkage |
| D. | deliver the molten metal from pouring basin to gate |
| Answer» D. deliver the molten metal from pouring basin to gate | |
| 4702. |
Metal patterns are used for |
| A. | small castings |
| B. | large castings |
| C. | complicated castings |
| D. | large scale production of castings |
| Answer» E. | |
| 4703. |
The instrument which has all the features of try-square, bevel protractor, rule and scriber, is |
| A. | outside micrometer |
| B. | inside micrometer |
| C. | depth gauge micrometer |
| D. | combination set |
| Answer» E. | |
| 4704. |
When a hole or cavity to be cored is not in line with the parting surface, then a __________ is used. |
| A. | horizontal core |
| B. | vertical core |
| C. | drop core |
| D. | balanced core |
| Answer» D. balanced core | |
| 4705. |
The bloom is smaller than a billet. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4706. |
In average work, the tolerance produced by investment casting method is |
| A. | 0.05 mm |
| B. | +0.2 mm |
| C. | +05 mm |
| D. | +1 mm |
| Answer» B. +0.2 mm | |
| 4707. |
The low pressure acetylene is produced at the welding site by the chemical reaction between water and calcium carbonate. |
| A. | Correct |
| B. | Incorrect |
| Answer» C. | |
| 4708. |
The ferrous metals require more machining allowance than non-ferrous metals. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4709. |
In a four high rolling mill, there are four rolls out of which |
| A. | one is working roll and three are backing up rolls |
| B. | two are working rolls and two are backing up rolls |
| C. | three are working rolls and one is backing up roll |
| D. | all of the four are working rolls |
| Answer» C. three are working rolls and one is backing up roll | |
| 4710. |
When a pattern is made in three parts, the bottom part is known as a cope. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4711. |
In __________ welding, the weld may be made either from left to right or from right to left. |
| A. | fore-hand |
| B. | back-hand |
| C. | vertical |
| Answer» D. | |
| 4712. |
The algebraic difference between the minimum limit and the basic size is called |
| A. | actual deviation |
| B. | upper deviation |
| C. | lower deviation |
| D. | fundamental deviation |
| Answer» D. fundamental deviation | |
| 4713. |
Blanking and piercing operations can be performed simultaneously in a |
| A. | simple die |
| B. | progressive die |
| C. | compound die |
| D. | combination die |
| Answer» D. combination die | |
| 4714. |
In welding copper alloys with TIG arc welding |
| A. | direct current with straight polarity is used |
| B. | direct current with reversed polarity is used |
| C. | alternating current is used |
| D. | any one of these |
| Answer» B. direct current with reversed polarity is used | |
| 4715. |
The temperature of oxy-hydrogen flame is __________ oxy-acetylene flame. |
| A. | same as |
| B. | less than |
| C. | more than |
| Answer» C. more than | |
| 4716. |
In a hot chamber die casting machine |
| A. | ferrous alloys with low melting temperature are casted |
| B. | ferrous alloys with high melting temperature are casted |
| C. | non-ferrous alloys with low melting temperature are casted |
| D. | non-ferrous alloys with high melting temperature are casted |
| Answer» D. non-ferrous alloys with high melting temperature are casted | |
| 4717. |
The electrodes used in spot welding have a tip of |
| A. | stainless steel |
| B. | aluminium |
| C. | copper |
| D. | brass |
| Answer» D. brass | |
| 4718. |
A pattern maker's shrinkage rule considers |
| A. | all pattern allowances |
| B. | only shrinkage allowance |
| C. | all materials to be cast |
| D. | all materials of the pattern |
| Answer» C. all materials to be cast | |
| 4719. |
The tolerance produced by shell moulding process of casting is |
| A. | +0.05 mm |
| B. | 0.2 mm |
| C. | +0.5 mm |
| D. | 1 mm |
| Answer» C. +0.5 mm | |
| 4720. |
In submerged arc welding, an arc is produced between a |
| A. | carbon electrode and the work |
| B. | metal electrode and the work |
| C. | bare metal electrode and the work |
| D. | two tungsten electrodes and the work |
| Answer» D. two tungsten electrodes and the work | |
| 4721. |
In shielded arc welding |
| A. | large electrode is used |
| B. | welding rod coated with slag is used |
| C. | welding rod coated with fluxing material is used |
| D. | none of the above |
| Answer» D. none of the above | |
| 4722. |
In a die casting method, the molten metal is forced into mould under high pressure. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 4723. |
In a centrifugal casting method, the impurities are collected in the centre of the casting. |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 4724. |
Which of the following methods can be used for manufacturing 2 metre long seamless metallic tubes? |
| A. | Drawing |
| B. | Extrusion |
| C. | Rolling |
| D. | Extrusion and rolling |
| Answer» E. | |
| 4725. |
A saw which cuts wood during the return stroke of the saw is known as |
| A. | push saw |
| B. | pull saw or draw saw |
| Answer» C. | |
| 4726. |
The chisel used for cutting key ways is |
| A. | flat chisel |
| B. | cape chisel |
| C. | round nose chisel |
| D. | diamond pointed chisel |
| Answer» C. round nose chisel | |
| 4727. |
The temperature at which the new grains are formed in the metal is called |
| A. | lower critical temperature |
| B. | upper critical temperature |
| C. | eutectic temperature |
| D. | recrystallisation temperature |
| Answer» E. | |
| 4728. |
Thread rolling is restricted to |
| A. | ferrous materials |
| B. | ductile materials |
| C. | hard materials |
| D. | none of these |
| Answer» C. hard materials | |
| 4729. |
The valve overlap in four stroke petrol engines is approximately |
| A. | 30 |
| B. | 60 |
| C. | 90 |
| D. | 120 |
| Answer» B. 60 | |
| 4730. |
In sheet metal blanking, shear is provided on punches and dies so that |
| A. | press load is reduced |
| B. | good cut edge is obtained |
| C. | warping of sheet is minimised |
| D. | cut blanks are straight |
| Answer» B. good cut edge is obtained | |
| 4731. |
In arc welding, the electric arc is produced between the work and the electrode by |
| A. | voltage |
| B. | flow of current |
| C. | contact resistance |
| D. | all of these |
| Answer» D. all of these | |
| 4732. |
The petrol engines are also known as |
| A. | spark ignition (S.I.) engines |
| B. | compression ignition (C.I.) engines |
| C. | steam engines |
| D. | none of these |
| Answer» B. compression ignition (C.I.) engines | |
| 4733. |
In a centrifugal casting method |
| A. | core is made of sand |
| B. | core is made of ferrous metal |
| C. | core is made of non-ferrous metal |
| D. | no core is used |
| Answer» E. | |
| 4734. |
Which of the following indicates a multigrade oil ? |
| A. | SAE 30 |
| B. | API SF |
| C. | SAE 20 W-50 |
| D. | API 50 |
| Answer» D. API 50 | |
| 4735. |
The natural gas is compressed in a CNG cylinder at a pressure of |
| A. | 200 bar |
| B. | 220 bar |
| C. | 250 bar |
| D. | 300 bar |
| Answer» B. 220 bar | |
| 4736. |
The cetane rating of Diesel fuel is in the order of |
| A. | 25 |
| B. | 45 |
| C. | 70 |
| D. | 90 |
| Answer» C. 70 | |
| 4737. |
The coefficient of friction for the clutch facing is approximately |
| A. | 0.1 |
| B. | 0.4 |
| C. | 0.8 |
| D. | 1.2 |
| Answer» C. 0.8 | |
| 4738. |
The component that connects the steering rack to the knuckles is |
| A. | tie-rod |
| B. | sector gear |
| C. | pivot |
| D. | spline |
| Answer» B. sector gear | |
| 4739. |
The most commonly used supplementary restraint system (SRS) component is |
| A. | seat belt |
| B. | brake |
| C. | airbag |
| D. | steering |
| Answer» D. steering | |
| 4740. |
The air gap between the central electrode and ground (or side) electrode of a spark plug is around |
| A. | 0.2 mm |
| B. | 0.5 mm |
| C. | 1 mm |
| D. | 1.5 mm |
| Answer» D. 1.5 mm | |
| 4741. |
The cetane number of a Diesel fuel is a measure of |
| A. | volatility |
| B. | viscosity |
| C. | ignition quality |
| D. | delay peirod |
| Answer» E. | |
| 4742. |
The aluminium alloy is used in cylinder blocks because |
| A. | it is lighter and have good heat dissipation characteristics |
| B. | material cost is low |
| C. | it does not require any cylinder liners |
| D. | the piston is also made of aluminium alloy |
| Answer» B. material cost is low | |
| 4743. |
In a fuel injection system, the electronic control module (ECM) calculates the optimum fuel-injection volume for the engine condition based on the data received from the sensors, and injects this volume of fuel into the intake manifold at the optimum timing. |
| A. | Correct |
| B. | Incorrect |
| Answer» B. Incorrect | |
| 4744. |
The tilting of the front wheels away from the vertical, when viewed from the front of the car, is called |
| A. | camber |
| B. | caster |
| C. | toe-in |
| D. | toe-out |
| Answer» B. caster | |
| 4745. |
The main function of the tread pattern on tyre is that |
| A. | the tread grooves pass air between the tyre and road surface, thereby preventing tyre from overheating |
| B. | the crests between the tread grooves absorb road noise |
| C. | in wet conditions, the tread grooves expel water that is drawn between the tyre and road surface |
| D. | the tread pattern protects the tyre's inner carcass from small stones and pieces of glass |
| Answer» D. the tread pattern protects the tyre's inner carcass from small stones and pieces of glass | |
| 4746. |
The compression ratio in petrol engine is kept less than in Diesel engine because |
| A. | it makes petrol engines lighter |
| B. | higher or equivalent compression ratio in petrol engines is not possible due to pre-ignition |
| C. | less compression ratio gives better performance |
| D. | it is just customary to have less compression ratio in petrol engines |
| Answer» C. less compression ratio gives better performance | |
| 4747. |
The information provided by the oxygen (O2) sensor to the feedback control system is about the |
| A. | air-fuel ratio |
| B. | air temperature |
| C. | air flow speed |
| D. | exhaust gas volume |
| Answer» B. air temperature | |
| 4748. |
The diagram which shows the correct crank positions corresponding to the opening and closing of the valves, is known as |
| A. | indicator diagram |
| B. | axial force diagram |
| C. | valve timing diagram |
| D. | none of these |
| Answer» D. none of these | |
| 4749. |
In automobiles G.V.W. refers to |
| A. | gross vehicle width |
| B. | gross vehicle weight |
| C. | gross vehicle wheel base |
| D. | gross vehicle wheel track |
| Answer» C. gross vehicle wheel base | |
| 4750. |
The firing order for an in-line four cylinder I.C. engine is |
| A. | 1-2-3-4 |
| B. | 1-3-4-2 |
| C. | 1-2-4-3 |
| D. | 1-3-2-4 |
| Answer» C. 1-2-4-3 | |