SSC JE Mock Test 7 - Online MCQ Exam

On volume basis, air contains following parts of oxygen _____________________?

1 Mark(s)

Your Answer:

21 21
23 23
25 25
77 77

Motion study involves analysis of________________?

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Your Answer:

actions of operator actions of operator
layout of work place layout of work place
tooling and equipment tooling and equipment
all of the above all of the above

A type of bond to which are attached coupons indicating the interest due and the date when such interest is to be paid is called ____________________?

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Your Answer:

Registered bond Registered bond
Coupon bond Coupon bond
Mortgage bond Mortgage bond
Collateral trust bond Collateral trust bond

First class timber has an average life of_____________?

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Your Answer:

less than one year less than one year
1 to 5 years 1 to 5 years
5 to 10 years 5 to 10 years
more than 10 years more than 10 years

Maximum shear stress theory for the failure of a material at the elastic limit, is known

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Your Answer:

Guest's or Trecas' theory Guest's or Trecas' theory
St. Venant's theory St. Venant's theory
Rankine's theory Rankine's theory
Haig's theory Haig's theory

The compressive strength of cast iron is __________ that of its tensile strength.

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Your Answer:

Equal to Equal to
Less than Less than
More than More than
None of these None of these

Which of the following are ferrite materials?

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Your Answer:

U233 and Pu239 U233 and Pu239
U U
U238 and Pu239 U238 and Pu239
U238 and Th239 U238 and Th239

The means of access for inspection and cleaning of sewer line is known as

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Your Answer:

Inlet Inlet
Manhole Manhole
Drop manhole Drop manhole
Catch basin Catch basin

Effective length of a runway is the distance between

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Your Answer:

Ends of the runway Ends of the runway
Point of intersection of the obstruction clearance line and the extended plane of the runway surface, and the other end of the runway
Point of intersection of the glide path and the extended plane of the runway surface and the other end of the runway
Ends of the clear way on either side Ends of the clear way on either side

The weight of a body is due to

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Your Answer:

Centripetal force of earth Centripetal force of earth
Gravitational pull exerted by the earth Gravitational pull exerted by the earth
Force of attraction experienced by par-ticles
Gravitational force of attraction towards the centre of the earth

A loop current is an actual current in a branch.

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Your Answer:

True True
False False

If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in

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Your Answer:

Neutral equilibrium Neutral equilibrium
Stable equilibrium Stable equilibrium
Unstable equilibrium Unstable equilibrium
None of these None of these

The coagulant which is generally not used for treating the sewage, is__________________?

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Your Answer:

Alum Alum
Ferric chloride Ferric chloride
Ferric sulphate Ferric sulphate
Chlorinated copperas Chlorinated copperas

Ratio of inertia force to elastic force is known as__________________?

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Your Answer:

Mach number Mach number
Froude number Froude number
Reynold’s number Reynold’s number
Weber’s number Weber’s number
none of the above none of the above

The stage of river carrying a discharge of Q m7sec at a point is 10 m and slope of water surface is (1/4000). The discharge of a flood at the same point and same stage of 10 m with a water surface slope of(l/1000) will be________________?

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Your Answer:

V2 Q m3/sec V2 Q m3/sec
0.5 Q mVsec 0.5 Q mVsec
2 Q m3/sec 2 Q m3/sec
4 Q m3/sec 4 Q m3/sec

Which one of the following loading is considered for the design of axles?

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Your Answer:

Bending moment only Bending moment only
Twisting moment only Twisting moment only
Combined bending moment and twisting moments
Combined action of bending moment, twisting moment and axial thrust

What does symbol ‘V’ employ in work study________________?

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Your Answer:

operation operation
inspection inspection
delay/ temporary Storage delay/ temporary Storage
permanent storage permanent storage

A 3-phase 4-wire system is commonly used on

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Your Answer:

Primary transmission Primary transmission
Secondary transmission Secondary transmission
Primary distribution Primary distribution
Secondary distribution Secondary distribution

A vehicle weighing w kg is to run on a circular curve of radius r. If the height of its centre of gravity above the road level is h and the distance between the centres of wheels is 2a, the maximum velocity, in order to avoid over turning, will be

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Your Answer:

$$\frac{{{\text{gra}}}}{{\text{h}}}$$ $$\frac{{{\text{gra}}}}{{\text{h}}}$$
$$\sqrt {\frac{{{\text{gra}}}}{{\text{h}}}} $$
$$\root 3 \of {\frac{{{\text{gra}}}}{{\text{h}}}} $$
$$\root 4 \of {\frac{{{\text{gra}}}}{{\text{h}}}} $$

The heated parts of an electrical machine dissipate heat into their surroundings by which of the followingmodes of heat dissipation ?

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Your Answer:

Conduction Conduction
Convection Convection
Radiation Radiation
All of the above All of the above

The direction of rotation of a D.C. series motor can be changed by

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Your Answer:

Interchanging supply terminals Interchanging supply terminals
Interchanging field terminals Interchanging field terminals
Either of (A) and (B) above Either of (A) and (B) above
None of the above None of the above

As per UK design criteria, if LCN of aircraft is between 1.25 to 1.5 times the LCN of pavement, then the number of movements allowed are

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Your Answer:

Zero Zero
300 300
3000 3000
Unrestricted Unrestricted

Long distance railways use which of the following?

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Your Answer:

200 V D.C. 200 V D.C.
25 kV single phase A.C. 25 kV single phase A.C.
25 kV two phase A.C. 25 kV two phase A.C.
25 kV three phase A.C. 25 kV three phase A.C.

The flow rate in gear pump___________________?

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Your Answer:

increases with increase in pressure increases with increase in pressure
decreases with increase in pressure decreases with increase in pressure
more or less remains constant with in-crease in pressure
unpredictable unpredictable

Which one of the following factors does not affect the scale of the air photographs?

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Your Answer:

Focal length Focal length
Flying height Flying height
Ground elevation Ground elevation
None of these None of these

Resistance of a material always decreases if

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Your Answer:

Temperature of material is decreased Temperature of material is decreased
Temperature of material is increased Temperature of material is increased
Number of free electrons available becomes more
None of the above is correct None of the above is correct

The shape of recession limb of a hydrograph depends upon________________?

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Your Answer:

basin characteristics only basin characteristics only
storm characteristics only storm characteristics only
both (A) and (B) both (A) and (B)
none of the above none of the above

An ordinate in a funicular polygon represents__________________?

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Your Answer:

shear force shear force
resultant force resultant force
bending moment bending moment
equilibrium equilibrium

Stoke’s law is valid only if the size of particle is________________?

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Your Answer:

less than 0.0002 mm less than 0.0002 mm
greater than 0.2 mm greater than 0.2 mm
between 0.2 mm and 0.0002 mm between 0.2 mm and 0.0002 mm
all of the above all of the above

The ratio of the rate of change of discharge of an outlet to the rate of change in level of water surface in a distributary at its normal depth, is known as

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Your Answer:

Efficiency Efficiency
Sensitivity Sensitivity
Flexibility Flexibility
Modular limit Modular limit

Efficiency of rankine cycle can be increased by_________________?

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Your Answer:

decreasing initial steam pressure and temperature
increasing exhaust pressure increasing exhaust pressure
decreasing exhaust pressure decreasing exhaust pressure
increasing the expansion ratio increasing the expansion ratio
increasing number of regenerative heaters

The amount of heat flow through a body by conduction is

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Your Answer:

Directly proportional to the surface area of the body
Directly proportional to the temperature difference on the two faces of the body
Dependent upon the material of the body Dependent upon the material of the body
All of the above All of the above

U238 will undergo fission by

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Your Answer:

High energy (fast) neutrons alone High energy (fast) neutrons alone
Low energy (slow) neutrons alone Low energy (slow) neutrons alone
Either fast or slow neutrons Either fast or slow neutrons
Medium energy neutrons Medium energy neutrons

If a system after undergoing a series of processes, returns to the initial state then__________________?

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Your Answer:

process is thermodynamically in equilibrium
process is executed in closed system cycle
its entropy will change due to irreversibility
sum of heat and work transfer will be zero

High carbon content in the steel causes

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Your Answer:

Decrease in tensile strength but increase in ductility
Increase in tensile strength but decrease in ductility
Decrease in both tensile strength and ductility
Increase in both tensile strength and ductility

Specific energy consumption is affected by which of the following factors ?

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Your Answer:

Retardation and acceleration values Retardation and acceleration values
Gradient Gradient
Distance between stops Distance between stops
All of the above All of the above

In a forced vortex, the velocity of flow everywhere within the fluid is__________________?

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Your Answer:

maximum maximum
minimum minimum
zero zero
non-zero finite non-zero finite
unpredictable unpredictable

A 5 BHP engine running at full load would consume diesel of the order of_________________?

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Your Answer:

0.3 kg/hr 0.3 kg/hr
1 kg/hr 1 kg/hr
3 kg/hr 3 kg/hr
5 kg/hr 5 kg/hr

In a four stroke cycle petrol engine, the compression

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Your Answer:

Starts at 40° after bottom dead centre and ends at 30° before top dead centre
Starts at 40° before bottom dead centre and ends at 30° after bottom dead centre
Starts at bottom dead centre and ends at top dead centre
May start and end anywhere May start and end anywhere

For which of the following applications D.C. motors are still preferred ?

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Your Answer:

High efficiency operation High efficiency operation
Reversibility Reversibility
Variable speed drive Variable speed drive
High starting torque High starting torque

Electrical machines having a power output up to about 750 W may be called__________machines?

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Your Answer:

small size small size
medium size medium size
large size large size
any of the above any of the above

Grader is used mainly for___________________?

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Your Answer:

trimming and finishing trimming and finishing
shaping and trimming shaping and trimming
finishing and shaping finishing and shaping
finishing, shaping and trimming finishing, shaping and trimming

For evaporation and measurement of settable solids, the apparatus used, is________________?

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Your Answer:

A jar A jar
A breaker A breaker
A test tube A test tube
An Imhoff cone An Imhoff cone

In transformers using hot rolled steel, the cross-section of the yoke is made about _____ greater than that of the core

1 Mark(s)

Your Answer:

5 percent 5 percent
10 percent 10 percent
15 percent 15 percent
30 percent 30 percent
none of the above none of the above

A pre-stressed rectangular beam which carries two concentrated loads W at $$\frac{{\text{L}}}{3}$$ from either end, is provided with a bent tendon with tension P such that central one-third portion of the tendon remains parallel to the longitudinal axis, the maximum dip h is

1 Mark(s)

Your Answer:

$$\frac{{{\text{WL}}}}{{\text{P}}}$$ $$\frac{{{\text{WL}}}}{{\text{P}}}$$
$$\frac{{{\text{WL}}}}{{2{\text{P}}}}$$ $$\frac{{{\text{WL}}}}{{2{\text{P}}}}$$
$$\frac{{{\text{WL}}}}{{3{\text{P}}}}$$ $$\frac{{{\text{WL}}}}{{3{\text{P}}}}$$
$$\frac{{{\text{WL}}}}{{4{\text{P}}}}$$ $$\frac{{{\text{WL}}}}{{4{\text{P}}}}$$

compression force in two end posts The pin of a rocker bearing in a bridge is designed for

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Your Answer:

bearing and shear bearing and shear
bending and shear bending and shear
bearing and bending bearing and bending
bearing, shear and bending bearing, shear and bending

For supplying water to rabi crop, kharif crop and sugarcane, the channel is designed for a capacity equal to the greater of the water requirement of

1 Mark(s)

Your Answer:

rabi or kharif rabi or kharif
rabi and kharif or sugarcane rabi and kharif or sugarcane
rabi and sugarcane or kharif and sugarcane
rabi or kharif or sugarcane rabi or kharif or sugarcane

The deflection of a uniform circular bar of diameter d and length $$l$$, which extends by an amount under a tensile pull W, when it carries the same load at its mid-span, is

1 Mark(s)

Your Answer:

$$\frac{{{\text{e}}l}}{{2{\text{d}}}}$$ $$\frac{{{\text{e}}l}}{{2{\text{d}}}}$$
$$\frac{{{{\text{e}}^2}l}}{{3{{\text{d}}^2}}}$$
$$\frac{{{\text{e}}{l^2}}}{{3{{\text{d}}^2}}}$$
$$\frac{{{{\text{e}}^{\frac{1}{2}}}}}{{3{{\text{d}}^2}}}$$

The centrifugal tension in belts

1 Mark(s)

Your Answer:

Decreases the power transmitted Decreases the power transmitted
Increases the power transmitted Increases the power transmitted
Increase the wrap angle Increase the wrap angle
Increases the belt tension without increasing power transmission

Which of the following methods is used for laying of underground cables?

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Your Answer:

Direct laying Direct laying
Draw-in-system Draw-in-system
Solid system Solid system
All of the above All of the above

Electric intensity at infinite distance from the point charge is_____________?

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Your Answer:

zero zero
infinite infinite
positive positive
negative negative

For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is________________?

1 Mark(s)

Your Answer:

10 cm 10 cm
12 cm 12 cm
15 cm 15 cm
18 cm 18 cm

At a certain frequency, the output voltage of a filter is 6 V and the input is 12 V. The voltage ratio in decibels is_____________?

1 Mark(s)

Your Answer:

6.02 dB 6.02 dB
-6.02 dB -6.02 dB
12.04 dB 12.04 dB
-12.04 dB -12.04 dB

Surface resistance of an insulating material is reduced due to the

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Your Answer:

Smoky and dirty atmosphere Smoky and dirty atmosphere
Humidity in the atmosphere Humidity in the atmosphere
Both A and B Both A and B
Neither A nor B Neither A nor B

The commutator segments are connected to the armature conductors by means of

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Your Answer:

Copper lugs Copper lugs
Resistance wires Resistance wires
Insulation pads Insulation pads
Brazing Brazing

The use of _________ instruments is merely confined within laboratories as standardizing instruments?

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Your Answer:

absolute absolute
indicating indicating
recording recording
integrating integrating

The thickness of insulation provided on the conductor depends on

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Your Answer:

The magnitude of voltage on the conductor
The magnitude of current flowing through it
Both (A) and (B) Both (A) and (B)
None of the above None of the above

The frequency of domestic power supply in India is

1 Mark(s)

Your Answer:

200 Hz 200 Hz
100 Hz 100 Hz
60 Hz 60 Hz
50 Hz 50 Hz

Supercharging is essential in_____________?

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Your Answer:

diesel engines diesel engines
gas turbines gas turbines
petrol engines petrol engines
aircraft engines aircraft engines

The provision of traffic signals at intersections

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Your Answer:

reduces right angled and rear end collisions
increases right angled and rear end collisions
reduces right angled collisions but may increase rear end collisions
reduces rear end collisions but may increase right angled collisions

The electrostatic stress in underground cables is

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Your Answer:

Same at the conductor and the sheath Same at the conductor and the sheath
Minimum at the conductor and maximum at the sheath
Maximum at the conductor and minimum at the sheath
Zero at the conductor as well as on the sheath

An R.C.C beam of 25 cm width has a clear span of 5 metres and carries a U.D.L. of 2000 kg/m inclusive of its self weight. If the lever arm of the section is 45 cm., the beam is

1 Mark(s)

Your Answer:

Safe in shear Safe in shear
Is safe with stirrups Is safe with stirrups
Is safe with stirrups and inclined members
Needs revision of the section Needs revision of the section

A strain gauge is a passive transducer and is employed for converting.

1 Mark(s)

Your Answer:

Mechanical displacement into a change of resistance
Pressure into a change of resistance Pressure into a change of resistance
Force into a displacement Force into a displacement
Pressure into displacement Pressure into displacement

The units of kinematic viscosity are____________________?

1 Mark(s)

Your Answer:

metres2 per sec metres2 per sec
kg sec/metre kg sec/metre
newton-sec per metre newton-sec per metre
newton-sec per metre newton-sec per metre
none of the above none of the above

In an RC integrating circuit, the output voltage is taken across the capacitor.

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Your Answer:

True True
False False

Maximum permissible velocity 1.5 m/sec, is adopted in drains_______________________?

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Your Answer:

With beds of rocks and gravels With beds of rocks and gravels
Lined with stones Lined with stones
Both A. and B. D. Neither A. nor B. Both A. and B. D. Neither A. nor B.

With usual notations the depth of the neutral axis of a balanced section, is given by______________?

1 Mark(s)

Your Answer:

mc/t = (d – n)/n mc/t = (d – n)/n
t/mc = (d – n)/n t/mc = (d – n)/n
t/mc = (d + n)/n t/mc = (d + n)/n
mc/t = n/ (d – n) mc/t = n/ (d – n)

________________ frequency is not common in low frequency traction system?

1 Mark(s)

Your Answer:

40 Hz 40 Hz
25 Hz 25 Hz
16 Hz 16 Hz
non of these non of these

Where reactor operation is designed with fast neutrons such as in reactors using highly enriched fuel, the moderator used is

1 Mark(s)

Your Answer:

Heavy water Heavy water
Graphite Graphite
Carbon dioxide Carbon dioxide
No moderator is needed No moderator is needed

The rate of acceleration on suburban orurban services is restricted by the consideration of______________?

1 Mark(s)

Your Answer:

Engine power Engine power
Track curves Track curves
Passenger Discomfort Passenger Discomfort
Track size Track size

The size of cam depends upon

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Your Answer:

Base circle Base circle
Pitch circle Pitch circle
Prime circle Prime circle
Pitch curve Pitch curve

A pipe which is installed in the house drainage to preserve the water seal of traps is called

1 Mark(s)

Your Answer:

Vent pipe Vent pipe
Anti-siphonage pipe Anti-siphonage pipe
Waste pipe Waste pipe
Soil pipe Soil pipe

Which of the following does not represent an activity?

1 Mark(s)

Your Answer:

site located site located
foundation is being dug foundation is being dug
the office area is being cleaned the office area is being cleaned
the invitations are being sent the invitations are being sent

The suitable system of sanitation for area of distributed rainfall throughout the year with less intensity is

1 Mark(s)

Your Answer:

Separate system Separate system
Combined system Combined system
Partially separate system Partially separate system
Partially combined system Partially combined system

H V are the algebraic sums of the forces resolved horizontally and vertically respectively, M is the algebraic sum of the moments of forces about any point, for the equilibrium of the body acted upon____________________?

1 Mark(s)

Your Answer:

H = 0 H = 0
V = 0 V = 0
M = 0 M = 0
All the above All the above

A thyristor can termed as__________?

1 Mark(s)

Your Answer:

AC switch AC switch
DC switch DC switch
Both a and B Both a and B
Square wave switch Square wave switch

Evaluating Your Answers

SSC JE Mock Test 7 : Question 1 of 76