SSC JE Mock Test 10 - Online MCQ Exam

Which of the following trees yields hard wood ?

1 Mark(s)

Your Answer:

deodar deodar
chir chir
shishum shishum
pine pine

Manganese is added in low carbon steel to

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Your Answer:

Make the steel tougher and harder Make the steel tougher and harder
Raise the yield point Raise the yield point
Make the steel ductile and of good bending qualities
All of the above All of the above

In pressure supply mains, water hammer pressure is reduced by providing

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Your Answer:

Sluice valves Sluice valves
Air valves Air valves
Pressure relief valves Pressure relief valves
None of these None of these

A force acting on a body may

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Your Answer:

Change its motion Change its motion
Balance the other forces acting on it Balance the other forces acting on it
Retard its motion Retard its motion
All of the above All of the above

An open vessel of water is accelerated up an inclined plane. The free water surface will__________________?

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Your Answer:

be horizontal be horizontal
make an angle in direction of inclination of inclined plane
make an angle in opposite direction to inclination of inclined plane
any one of above is possible any one of above is possible
none of the above none of the above

A metal pipe of 1 m diameter contains a fluid having a pressure of 1 N/mm2. If the permissible tensile stress in the metal is 20 N/mm2, then the thickness of the metal required for making the pipe will be

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Your Answer:

5 mm 5 mm
10 mm 10 mm
15 mm 15 mm
25 mm 25 mm

Which of the following would lead to a reduction in thermal resistance?

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Your Answer:

In conduction, reduction in the thickness of the material and an increase in thermal conductivity.
In convection, stirring of the fluid and cleaning the heating surface.
In radiation, increasing the temperature and reducing the emissivity.
All of the above All of the above

The entrance and exit curves of a rotary have

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Your Answer:

equal radii and equal widths of pavement
equal radii but pavement width is more at entrance than at exit curve
equal pavement widths but radius is more at entrance curve than at exit curve
different radii and different widths of pavement

A galvanometer is a meter that measures small amounts of voltage.

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Your Answer:

True True
False False

Willian's law states that the steam consumption per hour provided with a throttled governor is proportional to (where $${\text{I}}{\text{.P}}{\text{.}}$$ = Indicated Power)

1 Mark(s)

Your Answer:

$$\frac{1}{{{\text{I}}{\text{.P}}{\text{.}}}}$$
$$\frac{1}{{{{\left( {{\text{I}}{\text{.P}}{\text{.}}} \right)}^2}}}$$
$${\text{I}}{\text{.P}}{\text{.}}$$ $${\text{I}}{\text{.P}}{\text{.}}$$
$${\left( {{\text{I}}{\text{.P}}{\text{.}}} \right)^2}$$

The switching function of semiconductor devices can be characterized with____________?

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Your Answer:

Duty ratio only Duty ratio only
Frequency only Frequency only
Duty ratio and frequency Duty ratio and frequency
Duty ratio, frequency and time delay Duty ratio, frequency and time delay

The carryover factor in a prismatic member whose far end is fixed is

1 Mark(s)

Your Answer:

0 0
$$\frac{1}{2}$$ $$\frac{1}{2}$$
$$\frac{3}{4}$$ $$\frac{3}{4}$$
1 1

An advantage of RC coupling scheme is the___________?

1 Mark(s)

Your Answer:

Good impedance matching Good impedance matching
Economy Economy
High efficiency High efficiency
None of the above None of the above

Assertion A : Intervention of undulations in the sea bed reduces the depth of wave at the section.Reason R : No wave can have a height greater than the depth of water through which it passes.Select your answer based on the coding system given below:

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Your Answer:

Both A and R are true and R is correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false. A is true but R is false.
A is false but R is true. A is false but R is true.

These types of projectors converge at a vanishing point:

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Your Answer:

Perspective Perspective
Parallel Parallel
Orthographic Orthographic
Oblique Oblique

The permissible flux density in case of cold rolled grain oriented steel is around

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Your Answer:

1.7 Wb/m2 1.7 Wb/m2
2.7 Wb/m2 2.7 Wb/m2
3.7 Wb/m2 3.7 Wb/m2
4.7 Wb/m2 4.7 Wb/m2

The natural solid fuels are : ________?

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Your Answer:

Wood Wood
Peat Peat
Lignite Lignite
All of above All of above

Thermal conductivity of water in general with rise in temperature ____________________?

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Your Answer:

increases increases
decreases decreases
remains constant remains constant
may increase or decrease depending on temperature

Fuel oil consumption guarantees for I.C. engine are usually based on

1 Mark(s)

Your Answer:

Low heat value of oil Low heat value of oil
High heat value of oil High heat value of oil
Net calorific value of oil Net calorific value of oil
Calorific value of fuel Calorific value of fuel

For transmission of power over a distance of 500 km, the transmission voltage should be in the range

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Your Answer:

150 to 220 kV 150 to 220 kV
100 to 120 kV 100 to 120 kV
60 to 100 kV 60 to 100 kV
20 to 50 kV 20 to 50 kV

Which of the following has no units?

1 Mark(s)

Your Answer:

Permeability Permeability
Moment of a magnet Moment of a magnet
Magnetic susceptibility Magnetic susceptibility
Permittivity Permittivity

________________ motor is a constant speed motor?

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Your Answer:

Synchronous motor Synchronous motor
Schrage motor Schrage motor
Induction motor Induction motor
Universal motor Universal motor

The direction of Coriolis component of acceleration is the direction

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Your Answer:

Of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link
Along the centripetal acceleration Along the centripetal acceleration
Along tangential acceleration Along tangential acceleration
Along perpendicular to angular velocity Along perpendicular to angular velocity

Scavenging air in diesel engine means

1 Mark(s)

Your Answer:

Air used for combustion sent under pressure
Forced air for cooling cylinder Forced air for cooling cylinder
Burnt air containing products of combustion
Air used for forcing burnt gases out of engine's cylinder during the exhaust period

A five day B.O.D. at 15°C of the sewage of a town is 100 kg/day. If the 5 day B.O.D. per head at 15°C for standard sewage is 0.1 kg/day, the population equivalent is____________________?

1 Mark(s)

Your Answer:

100 100
1000 1000
5000 5000
10000 10000

Most of the high transmission lines in Pakistan are_______________?

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Your Answer:

underground underground
overhead overhead
either of the above either of the above
none of the above none of the above

Horizontal distances obtained by thermometric observations_________________?

1 Mark(s)

Your Answer:

require slope correction require slope correction
require tension correction require tension correction
require slope and tension corrections require slope and tension corrections
do not require slope and tension corrections

Gas turbine as compared to steam turbine

1 Mark(s)

Your Answer:

Requires less space for installation Requires less space for installation
Has compressor and combustion chamber Has compressor and combustion chamber
Has less efficiency Has less efficiency
All of these All of these

For the taxiways, the following statement is true

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Your Answer:

The maximum longitudinal grade is 3% The maximum longitudinal grade is 3%
The permissible rate of change of grade is 1%
The permissible transverse grade is 1.5%
All the above All the above

Rate of flow of sewage is generally assumed__________________?

1 Mark(s)

Your Answer:

More than the rate of water supply More than the rate of water supply
Equal to the rate of water supply Equal to the rate of water supply
Less than the rate of water supply Less than the rate of water supply
At 150 litres per capita At 150 litres per capita

Advantages of HVDC transmission over AC system is / are____________?

1 Mark(s)

Your Answer:

Reversal of power can be controlled by firing angle
Very good dynamic behavior Very good dynamic behavior
They can link two AC system operating unsynchronized
All of these All of these

The angle of contact in case of a liquid depends upon___________________?

1 Mark(s)

Your Answer:

the nature of the liquid and the solid the nature of the liquid and the solid
the material which exists above the free surface of the liquid
both of die above both of die above
any one of the above any one of the above
none of die above none of die above

The distributors for residential areas are

1 Mark(s)

Your Answer:

Single phase Single phase
Three-phase three wire Three-phase three wire
Three-phase four wire Three-phase four wire
None of the above None of the above

The rate of filtration in slow sand filters in million litres per day per hectare is about

1 Mark(s)

Your Answer:

50 to 60 50 to 60
100 to 150 100 to 150
500 to 600 500 to 600
1400 to 1500 1400 to 1500

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SSC JE Mock Test 10 : Question 1 of 34