# Engineering/Machine Design Mcq set 02 Sample Test,Sample questions

## Question: ` A sliding bearing which can support steady loads without any relative motion between the journal and the bearing, is called`

1.Hydrostatic lubricated bearing

2.Hydrodynamic lubricated bearing

3. Boundary lubricated bearing

4.Zero film bearing

## Question: ` A tap bolt`

1.Has a head on one end and a nut fitted to the other

2.Has head at one end and other end fits into a tapped hole in the other part to be joined

1.Woodruff key

2.Feather key

## Question: ` At low temperatures (say 75°C) the notched bar impact value of steel`

1.Increases markedly

2.Decreases markedly

3.Remain same

4.Depends on heat treatment carried out

## Question: ``` If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (neglecting centrifugal tension) will be equal to (Where, Pc is centrifugal tension) ```

1.P1 - P2

2.P1 + P2

3.⅟2 × (P1 + P2)

4. [⅟2 × (P1 + P2)] + Pc

1.0.2

2.0.25

3.0.50

4.0.6

## Question: ` Rivets are generally specified by`

1.Thickness of plates to be riveted

2.Length of rivet

4.Nominal diameter

## Question: ` Shear stress theory is applicable for`

1. Ductile materials

2. Brittle materials

3.Elastic materials

4.All of the above

## Question: ` The dedendum circle diameter is equal to (where φ = Pressure angle)`

1.Pitch circle diameter × cosφ

3.Clearance circle diameter × cosφ

4.Pitch circle diameter × sinφ

1. 2/8

2.8/2

3.4/8

4. 8/4

1. 0.45

2.0.55

3.0.65

4.0.75

## Question: ` The function of a washer is to`

1.Provide cushioning effect

2.Provide bearing area

3.Absorb shocks and vibrations

4.Provide smooth surface in place of rough surface

1. 60°

2.55°

3.47°

4.29°

## Question: ` Turn buckle has`

1.Right hand threads on bout ends

2.Left hand threads on both ends

3.Left hand threads on one end and right hand threads on other end

## Question: `A bolt`

1.Has a head on one end and a nut fitted to the other

2.Has head at one end and other end fits into a tapped hole in the other part to be joined

## Question: `A machine part subjected to _________ is called a strut.`

1.An axial compressive force

2.An axial tensile force

3.A tangential force

4.Any one of these

## Question: ```A stud ```

1.Has a head on one end and a nut fitted to the other

2. Has head at one end and other end fits into a tapped hole in the other part to be joined

## Question: `A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as`

1.Angular bevel gears

2.Mitre gears

3.Crown Bevel gears

4.Internal bevel gears

## Question: `An alien bolt is`

1.Self locking bolt

2.Same as stud

3. Provided with hexagonal depression in head

4.Used in high speed components

## Question: `Ball bearing type screws are found in following application`

1.Screw jack

2. Aeroplane engines

3.Crane

4.Steering mechanism

## Question: `Buttress threads are usually found on`

1.Screw cutting lathes

2.Feed mechanisms

3.Spindles of bench vices

4.Railway carriage couplings

## Question: `Cap screws are`

1. Similar to small size tap bolts except that a greater variety of shapes of heads are available

2. Slotted for a screw driver and generally used with a nut

3.Used to prevent relative motion between parts

4.Provided with detachable caps

## Question: `Fibrous fracture occurs in`

1. Ductile material

2.Brittle material

3.Elastic material

4. Hard material

1.8

2.6

3.4

4.10

## Question: `In a horizontal flat belt drive, it is customary to use`

1.Bottom side of belt as slack side

2.Top side of belt as slack side

3.Idler pulley

4.None of the above

1.d

2.1.25 d

3.1.5 d

4.1.75 d

## Question: `Jam nut is a locking device in which`

1.One smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming

2.A slot is cut partly in middle of nut and then slot reduced by tightening a screw

3.A hard fibre or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip

4.Through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter spitted and bent in reverse direction at other end

## Question: `Machine screws are`

1. Similar to small size tap bolts except that a greater variety of shapes of heads are available

2.Slotted for a screw driver and generally used with a nut

3.Used to prevent relative motion between two parts

4.Similar to stud

1. 30°

2.45°

3.60°

4.80°

1. Same

2.Coarser

3.Finer

4.Very fine

## Question: `The stress induced in the belt is,`

1.Tensile stress

2.Compressive stress

3.Direct shear stress

4. Torsional shear stress

## Question: ```The taper on cotter varies from ```

1.1 in 24 to 1 in 20

2.1 in 15 to 1 in 10

3.1 in 32 to 1 in 24

4.1 in 48 to 1 in 24

## Question: `Transverse fillet welded joints are designed for`

1.Tensile strength

2.Compressive strength

3. Shear strength

4.Bending strength

## Question: `When the belt is transmitting maximum power,`

1.The tension in tight side is twice the centrifugal tension

2.The tension in slack side is equal to the centrifugal tension

3.The tension in tight side is thrice the centrifugal tension

4.None of the above

1.√(Pmax / 2m)

2. √(Pmax / 3m)

3.√(Pmax / m)

4.√(3m /Pmax)

## Question: `When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will`

1.Have contact at the bottom most of the bearing

2. Move towards right of the bearing making no metal to metal contact

3.Move towards right of the bearing making the metal to metal contact

4.Move towards left of the bearing making metal to metal contact

1. Bolts

2.Keys

3.Cotters

4.Rivets

## More MCQS

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