

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 | |