Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
Overall efficiency of a centrifugal pump is
A)
Product of manometric and mechanical efficiencies.
B)
Ratio of manometric efficiency to mechanical efficiency.
C)
Product of manometric and hydraulic efficiency
D)
Ratio of mechanical efficiency to manometric efficiency.
Overall pump efficiency is the product of hydraulic/manometric and mechanical efficiencies when defined in those stages.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
What role do non-governmental organizations (NGOs) play in protecting water quality?
A)
they pass water protection laws, assign protection to an agency and provide funding for enforcement
B)
they encourage passage of water protection laws and support their enforcement
C)
they decide if a water quality protection law or regulation is being broken
D)
they set specific standards for water protection laws, help people, businesses and other agencies follow them and enforce them when they are not followed
NGOs commonly advocate for water-protection laws and support their implementation/enforcement.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
Which is the fastest method of drilling and especially useful in unconsolidated formations?
A)
Cable tool method
B)
Water-jet boring method
C)
Hydraulic Rotary method
D)
Reverse Rotary method
Hydraulic rotary drilling is particularly fast and useful in unconsolidated formations.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
The main function of centrifugal pumps are to
A)
Transfer speed
B)
Transfer pressure
C)
Transfer temperature
D)
Transfer energy
A centrifugal pump transfers mechanical energy to fluid.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
The inlet passage of water entry is controlled by
A)
Head race
B)
Gate
C)
Tail race
D)
Pump
A gate controls water entry into an inlet passage.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
What is black water?
A)
It is waste water discharged from toilet
B)
Waste water from the bathroom
C)
Waste water from the kitchen sink
D)
Grey water mixed with effluent
Black water is wastewater from toilets containing fecal matter/urine.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
What is the fundamental principle of operation for a centrifugal pump?
A)
It employs gears and rotors to generate pressure
B)
It uses centrifugal force to increase fluid velocity and create pressure
C)
It uses reciprocating motion to move fluid
D)
If relies on the venturi effect to boost fluid flow.
A centrifugal pump uses centrifugal action to impart velocity and pressure to fluid.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
The electromagnetic force is a force that acts between
A)
Magnetic field and electromotive force.
B)
Electrical and magnetic forces.
C)
Conductor and capacitor
D)
Transformer and circuit breaker.
Electromagnetic force acts through the interaction of electric and magnetic fields/forces; among the options, electrical and magnetic forces is intended.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
Which of the following can be recycled many times?
A)
Wood
B)
Plastic
C)
Aluminum
D)
Organic materials
Aluminium can be recycled repeatedly without major loss of material properties.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
Why are galvanized pipes not suitable for steam lines?
A)
Lowpressure to withstand steam.
B)
Properties of steel having low ductility
C)
Flake offzinc coating
D)
Limitation ofit strength
Zinc coating can flake/peel under steam service, making galvanized pipes unsuitable.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
The best groundwater reservoirs have
A)
low permeability and low porosity
B)
low permeability and high porosity
C)
high permeability and low porosity
D)
high permeability and high porosity
Good groundwater reservoirs have both high porosity and high permeability.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
What is the definition of density ?
A)
Velocity per unit area of a liquid
B)
Area per unit perimeter ofa liquid
C)
Mass per unit volume ofa liquid
D)
Discharge per unit nozzle ofa liquid
Density is mass per unit volume.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
Elevation pressure is created by elevation differences which of the following?
A)
The hose and the pump
B)
The nozzle and the pump
C)
The hose and the hydrant
D)
The nozzle and the hose
Elevation pressure differences in the stated system are determined by elevation between nozzle and hose.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
Which of the following cement is used in sewage and water treatment plants?
A)
Sulphate Resisting Cement
B)
Quick Setting Cement
C)
Low Heat Cement
D)
Rapid Hardening Cement
Sulphate-resisting cement is used where sewage/water exposure creates sulphate attack risk.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
Electromagnetic waves are propagated by oscillating electric and magnetic waves at
A)
right angles to each other.
B)
parallel to each other :
C)
inthe form of circle
D)
45° to each other.
Electric and magnetic fields in an electromagnetic wave oscillate at right angles to each other.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
The full form of NABL is
A)
National Accreditation Board Limited.
B)
National Accountancy Board of Licencing
C)
National Acreditation Board for Calibration and Testing Laboratories.
D)
National Acreditation Board for Water Quality Laboratories.
NABL is the National Accreditation Board for Testing and Calibration Laboratories.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
The boundary between the saturated zone and the unsaturated zone is called the
A)
water table
B)
aquifer
C)
aquiclude
D)
porosity
The water table is the boundary between the saturated and unsaturated zones.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
Which stream animal is an indicator of poor water quality?
A)
a black fly larva
B)
a caddis fly larva
C)
a May fly larva
D)
a riffle beetles
Black fly larvae tolerate poorer water quality than mayfly/caddisfly larvae; they are indicator organisms for degraded streams.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
The Current Electricity is defined as
A)
The flow of electrons from one section of the circuit to another.
B)
The flow of protons within the circuit.
C)
The protons and neutrons induce charge
D)
The flow of electrons in the circuit produces uniform electricity.
Current electricity is the flow of electric charge; in metallic circuits this is principally electron flow.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
The unit of electrical power is
A)
Radians
B)
Newton (N)
C)
Watt
D)
Joule
Electrical power is measured in watts.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
Which of the following is a positive displacement pump?
A)
Reciprocating pump
B)
Propeller pump
C)
Centrifugal pump
D)
Jet pump
A reciprocating pump is a positive-displacement pump.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
Which one of the following is a water borne disease?
A)
Influenza
B)
Smail pox
C)
Malaria
D)
Cholera
Cholera is a water-borne infectious disease.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
Electric power is a
A)
Vector quantity
B)
Scalar quantity
C)
Dimensionless quantity
D)
Infinite quantity
Electric power is a scalar quantity.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
Which gas produced in open dumps from the decomposition of biodegradable waste?
A)
Ethane
B)
Methane
C)
Propene
D)
Ethene
Anaerobic decomposition in open dumps produces methane.
Departmental (other) • Engineering Paper-I (Common For Civil, Electrical And Mechanical Engineers)
Under which rule of Government, guidelines for solid waste management are followed today?
A)
Municipal Solid Waste Management Rules, 2000
B)
Municipal Solid Waste Management Rules, 2016
C)
Solid Waste Management Rules, 2000
D)
Rural Solid Waste Management Rules, 2016
The Solid Waste Management Rules, 2016 are the current rules cited for municipal solid waste management.
