SSC JE Mock Test 8 - Online MCQ Exam

The thermal efficiency of diesel engines on weak mixtures is

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Your Answer:

Unaffected Unaffected
Lower Lower
Higher Higher
Dependent on other factors Dependent on other factors

Petrol that detonates easily is called

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High octane petrol High octane petrol
Low octane petrol Low octane petrol
Unleaded petrol Unleaded petrol
Blended fuel Blended fuel

The thermal efficiency of petrol and gas engines is about

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15% 15%
30% 30%
50% 50%
70% 70%

Normal heptane_______________?

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accelerates auto-ignition accelerates auto-ignition
helps to resist auto-ignition helps to resist auto-ignition
does not affect auto-ignition does not affect auto-ignition
has no relation with auto-ighition has no relation with auto-ighition
retards auto-ignition retards auto-ignition

If ΣH and ΣV are the algebraic sums of the forces resolved horizontally and vertically respectively and ΣM is the algebraic sum of the moments of forces about any point, for the equilibrium of the body acted upon

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Your Answer:

ΣH = 0 ΣH = 0
ΣV = 0 ΣV = 0
ΣM = 0 ΣM = 0
All the above All the above

In forward blocking mode of a thyristor________?

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junction J2 is in reverse bias and J1, J3 is in forward bias.
junction J3 is in forward bias and J1, J2 is in reverse bias.
Junction J1, J3 is in reverse bias and J2 is in forward bias.
Junction J1 and J2 is in forward bias and J3 is in reverse bias.

Sensor IFOV is proportional to:

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sin2 sin2
cos2 cos2
sec2 sec2
tan2 tan2

Metacentre is the point of intersection of _________________________?

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vertical upward force through e.g. of body and center line of body
buoyant force and the center line of body
mid point between e.g. and center of buoyancy
all of the above all of the above
none of the above none of the above

Coefficient of earth pressure at rest is

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Your Answer:

less than active earth pressure but greater than passive earth pressure
greater than active earth pressure but less than passive earth pressure
greater than both the active earth pressure and passive earth pressure
less than both the active and passive earth pressures

A closed loop system is distinguished from open loop system by which of the following ?

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Servomechanism Servomechanism
Feedback Feedback
Output pattern Output pattern
Input pattern Input pattern

In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics?

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Howe truss Howe truss
King post truss King post truss
Fink truss Fink truss
Warren truss Warren truss

If the diversity factor of a power station is high then its generation cost is___________?

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high high
low low
remain same remain same
depend on the plan type depend on the plan type

Which D.C. motor will be suitable along with flywheel for intermittent light and heavy loads?

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Series motor Series motor
Shunt motor Shunt motor
Cumulatively compounded motor Cumulatively compounded motor
Differentially compounded motor Differentially compounded motor

Inconel is an alloy of___________________?

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nickel, chromium and iron nickel, chromium and iron
nickel, copper nickel, copper
nickel, chromium nickel, chromium
nickel, zinc nickel, zinc
nickel, lead nickel, lead

Which of the following braking systems on the locomotives is costly ?

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Regenerative braking on electric locomotives
Vacuum braking on diesel locomotives Vacuum braking on diesel locomotives
Vacuum braking on steam locomotives Vacuum braking on steam locomotives
All braking systems are equally costly All braking systems are equally costly

The discharge of a double acting reciprocating pump is (where L = Length of stroke, A = Cross-sectional area of piston and N = Speed of crank in r.p.m.)

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Your Answer:

LAN LAN
2 LAN 2 LAN
$$\frac{{{\text{LAN}}}}{{60}}$$ $$\frac{{{\text{LAN}}}}{{60}}$$
$$\frac{{2{\text{LAN}}}}{{60}}$$ $$\frac{{2{\text{LAN}}}}{{60}}$$

The connection of intermediate vertical stiffeners to the web, not subjected to external loads, shall be designed for a minimum shear force (kN/m) of (where, t = the web thickness in mm h = the outstand of stiffener in mm)

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75 t2/h 75 t2/h
125 t3/h2 125 t3/h2
125 t2/h 125 t2/h
175 t2/h 175 t2/h

On which of the following factors does the sensitivity of a closed loop system to gain changes and load disturbances depend ?

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Your Answer:

Frequency Frequency
Loop gain Loop gain
Forward gain Forward gain
All of the above All of the above

Find the Thevenin equivalent (VTH and RTH) between terminals A and B of the circuit given below.

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Your Answer:

4.16 V, 120 Ω 4.16 V, 120 Ω
41.6 V, 120 Ω 41.6 V, 120 Ω
4.16 V, 70 Ω 4.16 V, 70 Ω
41.67 V, 70 Ω 41.67 V, 70 Ω

A single stage transistor amplifier contains______________ and associated circuitry?

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Your Answer:

Two transistors Two transistors
One transistor One transistor
Three transistor Three transistor
None of the above None of the above

When the bolts are subjected to reversal of stresses, the most suitable type of bolt is

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Your Answer:

Black bolt Black bolt
Ordinary unfinished bolt Ordinary unfinished bolt
Turned and fitted bolt Turned and fitted bolt
High strength bolt High strength bolt

Transformer coupling is used for__________amplification?

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Your Answer:

Power Power
Voltage Voltage
Current Current
None of the above None of the above

On Millier chart, the constant pressure lines_________________?

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Your Answer:

diverge from left to right diverge from left to right
diverge from right to left diverge from right to left
are equally spaced throughout are equally spaced throughout
first rise up and then fall first rise up and then fall
none of the above none of the above

The maximum B.M. due to an isolated load in a three hinged parabolic arch, (span l and rise h) having one of its hinges at the crown, occurs on either side of the crown at a distance_______________?

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Your Answer:

l/4 l/4
h/4 h/4
l l
l l

Nichrome wire is an alloy of

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Your Answer:

Lead and zinc Lead and zinc
Chromium and vanadium Chromium and vanadium
Nickel and chromium Nickel and chromium
Copper and silver Copper and silver

Activated carbon is used for

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Your Answer:

Disinfection Disinfection
Removing hardness Removing hardness
Removing odours Removing odours
Removing corrosiveness Removing corrosiveness

The advantage of cables over overhead transmission lines is

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Your Answer:

Easy maintenance Easy maintenance
Low cost Low cost
Can be used in congested areas Can be used in congested areas
Can be used in high voltage circuits Can be used in high voltage circuits

A 47 Ω resistor and a capacitor with 150 Ω of capacitive reactance are in series across an ac source. The impedance, expressed in rectangular form, is

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Your Answer:

Z = 47 Ω + j150 Ω Z = 47 Ω + j150 Ω
Z = 47 Ω - j150 Ω Z = 47 Ω - j150 Ω
Z = 197 Ω Z = 197 Ω
Z = 103 Ω Z = 103 Ω

When shear stress exceeds the permissible limit in a slab, then it is reduced by

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Your Answer:

Increasing the depth Increasing the depth
Providing shear reinforcement Providing shear reinforcement
Using high strength steel Using high strength steel
Using thinner bars but more in number Using thinner bars but more in number

Solid Grounding is used for Voltages?

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Your Answer:

Above 220 kv Above 220 kv
Above 11kv Above 11kv
Below 660 v Below 660 v
Below 115 v Below 115 v

Evaluating Your Answers

SSC JE Mock Test 8 : Question 1 of 30