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WorksheetsMudassar - Screening Test
Total questions: 40
Worksheet time: 20mins
A company claims that after adopting a new training program, employee productivity increased by 20%. Therefore, the training program guarantees higher productivity for all companies.
Which option most weakens the argument?
The company also upgraded its machinery during the same period
Employees welcomed the new training
Productivity is important for growth
The program lasted six months
Cities A, B, C, D, and E are connected as follows:
A–B (road, rail), B–C (air), C–D (road), D–E (rail), A–E (air).
Which single mode allows travel from A to D without changing mode?
Road
Rail
Air
Not possible
A person saves an equal amount every month for a year. He skips saving in April and May. By what percent must he increase savings from June to December to meet the original target?
20%
25%
33⅓%
16⅔%
A number is called “special” if it is divisible by 4 or 5. How many special numbers lie between 1 and 50?
22
20
18
25
Arrange in logical order:
Retirement
School
Birth
Employment
College
3, 2, 5, 4, 1
2, 3, 5, 4, 1
3, 5, 2, 4, 1
3, 2, 4, 5, 1
Arrange logically:
Diagnosis
Illness
Medicine
Doctor
Cure
4, 2, 1, 3, 5
2, 1, 4, 3, 5
2, 4, 1, 3, 5
2, 4, 3, 1, 5
Strong rainfall increased agricultural output this year. Food prices declined sharply during the same period.
This best supports the statement that:
Agricultural output influences food prices
Rainfall always reduces inflation
Food prices are unstable
Agriculture depends only on rainfall
Complete the series:
3, 9, 27, __, 243
54
81
90
72
Statement I: Online education is expanding rapidly.
Statement II: Internet access has increased worldwide.
A.
B.
C.
D.
I is cause, II is effect
II is cause, I is effect
Both are effects of independent causes
Both are independent causes
Complete the sequence:
ZYX, WVU, TSR, __, NML
QPO
PON
QRS
OPQ
How many times does digit 5 appear between 1 and 100?
19
20
21
18
Series: A1, C4, E9, G16, __
I25
H25
I36
J25
Average weight of 20 students is 60 kg. One student weighing 80 kg leaves. Find the new average.
58
59
60
61
For an ideal gas, internal energy depends on:
Pressure only
Volume only
Temperature only
Pressure and volume
The rate of a chemical reaction primarily depends on:
Equilibrium constant
Activation energy
Limiting reactant
Heat of reaction
LMTD method is used in design of:
Reactors
Distillation columns
Heat exchangers
All of above
A good refrigerant should have:
Low latent heat
High viscosity
High latent heat
Low density
Entropy change of an isolated system:
Always decreases
Always increases
Remains constant or increases
Always zero
Cooling towers operate mainly on the principle of:
Sensible heat transfer
Radiative cooling
Evaporative cooling
Conduction
During phase change at constant pressure, temperature remains:
Increasing
Decreasing
Constant
Unpredictable
Which cycle is used in steam power plants?
Brayton
Rankine
Otto
Diesel
Surging in compressors is due to:
Excess pressure
Backflow
Overheating
Lubrication failure
If pressure doubles and temperature remains constant, gas volume will:
A.
B.
C.
D.
Double
Become half
Remain same
Become four times
High BOD in water indicates:
Low pollution
High oxygen availability
High organic pollution
High salinity
Excess air in combustion leads to:
Higher efficiency
Lower flame temperature
Incomplete combustion
More CO formation
Gross calorific value is always:
Lower than NCV
Equal to NCV
Higher than NCV
Zero
Joule–Thomson coefficient relates to change in:
Pressure with volume
Temperature with pressure
Enthalpy with volume
Entropy with temperature
Bernoulli’s equation is valid for:
Viscous flow
Compressible flow
Ideal fluid flow
Turbulent flow
In a feedback control system, increasing the derivative action mainly:
Reduces steady-state error
Eliminates offset
Improves stability by anticipating error changes
Increases system gain
For laminar flow of a Newtonian fluid through a circular pipe, if the pipe diameter is doubled while keeping pressure drop and fluid properties constant, the volumetric flow rate will increase by a factor of:
2
4
8
16
For a first-order process with dead time, the most effective controller to reduce steady-state error and improve dynamic response is:
Proportional (P)
Proportional-Integral (PI)
Proportional-Derivative (PD)
Integral-Derivative (ID)
For the same flow rate and pipe diameter, compared to a venturi meter, an orifice meter generally has:
Higher discharge coefficient
Lower permanent pressure loss
Lower initial cost and higher energy loss
Better accuracy at low Reynolds number
Which temperature sensor is most suitable for accurate measurement in the range of 800–1200 °C?
A.
B.
C.
D.
RTD
Thermistor
Thermocouple
Bimetallic thermometer
Cavitation in centrifugal pumps occurs when:
Discharge pressure exceeds vapor pressure
NPSH available is less than NPSH required
Pump speed is reduced
Fluid temperature decreases
For a centrifugal pump operating at constant speed, increasing the system resistance will:
Increase flow rate and head
Decrease flow rate and increase head
Increase flow rate and decrease head
Not affect operating point
Which valve provides the best throttling control but is generally avoided for on-off service due to erosion?
Gate valve
Globe valve
Ball valve
Butterfly valve
Which heat exchanger is most suitable for handling high-pressure, high-temperature fluids?
Plate heat exchanger
Double-pipe heat exchanger
Shell-and-tube heat exchanger
Spiral heat exchanger
For forced convection over a flat plate, the Nusselt number increases primarily with an increase in:
Thermal conductivity of fluid
Reynolds number
Fluid density only
Pipe diameter only
The primary function of a steam trap is to:
Increase steam pressure
Remove non-condensable gases
Discharge condensate without loss of live steam
Superheat the steam
Compared to a fire-tube boiler, a water-tube boiler is preferred for:
Low-pressure applications
Small heating loads
High-pressure and high-capacity steam generation
Simple construction
