ABSA 4B (2) EXAM WITH VERIFIED
QUESTIONS AND ANSWERS|| GUARANTEED
PASS|| ALREADY GRADED A+|| LATEST
UPDATE 2026
Magnetic flux can be said to be
a) lines of force within a magnet and flowing N to S
b) lines of force outside a magnet and flowing N to S
c) a zone of lines outside a magnet
d) lines of force flowing S to N outside a magnet
e) lines of force flowing in a magnet - ANSWER-B
Current flow direction and intensity will
a) affect magnetic field direction and intensity
b) affect the voltage
c) affect the resistance of a circuit
d) not affect electromagnetic field direction
e) not affect electromagnetic field intensity - ANSWER-A
When a material or substance does not form a magnetic flux
easily it is said to have
a) permeability
b) resistance
c) reluctance
d) low field reactance
,e) low magnetic flux - ANSWER-C
The space or zone around a magnet through which lines of
force travel is termed
a) magnetic flux
b) permeability
c) reluctance
d) magnetic strength
e) magnetic field - ANSWER-E
Faraday discovered
a) the Right Hand Rule for conductors
b) that a conductor will have a voltage induced if it cuts
magnetic flux
c) the Left Hand Rule for motors
d) the Right Hand Rule for generators
e) that current flows from positive to negative - ANSWER-B
The best type of diagram for showing supply and distribution
systems is the
a) riser diagram
b) one-line diagram
c) elementary diagram
d) connection diagram
e) terminal and connection diagram - ANSWER-B
An electrical distribution system is composed of service,
feeders and
,a) secondary circuits
b) primary circuits
c) branch circuits
d) trunk circuits
e) tertiary circuits - ANSWER-C
The utility's responsibility will not go beyond the
a) first branch line
b) first overcurrent device
c) primary transformer
d) first trunk circuit
e) motor control centre
Introduction to Instrumentation - ANSWER-B
When a process variable has no method of sending information
to the final control element the system is known as
a) an automatic system
b) an open loop system
c) a cascading system
d) feedback system
e) feedforward system - ANSWER-B
An open loop control system requires
a) a transducer and a recorder
b) minimum deviation from set point
c) a very small amount of dead time or lag
d) constant attention
, e) two final control elements - ANSWER-D
A process variable which is adjusted in order to maintain or
achieve some desired value of another variable is termed the
a) process variable
b) final variable
c) manipulated variable
d) controlled variable
e) transmitting variable - ANSWER-C
A control loop controller
a) does not require a set point value
b) sends a signal to a primary element
c) measures the manipulated variable value, eliminating the
need of a primary element
d) will always eliminate deviation
e) constantly compares input signals to the set point - ANSWER-E
If a conductor is held stationary and a magnetic field is
moved across it, it forms what is known as
a) motor action
b) electromagnetism
c) generator action
d) transformer action
e) conduction
Magnetism and Electromagnetism - ANSWER-C
QUESTIONS AND ANSWERS|| GUARANTEED
PASS|| ALREADY GRADED A+|| LATEST
UPDATE 2026
Magnetic flux can be said to be
a) lines of force within a magnet and flowing N to S
b) lines of force outside a magnet and flowing N to S
c) a zone of lines outside a magnet
d) lines of force flowing S to N outside a magnet
e) lines of force flowing in a magnet - ANSWER-B
Current flow direction and intensity will
a) affect magnetic field direction and intensity
b) affect the voltage
c) affect the resistance of a circuit
d) not affect electromagnetic field direction
e) not affect electromagnetic field intensity - ANSWER-A
When a material or substance does not form a magnetic flux
easily it is said to have
a) permeability
b) resistance
c) reluctance
d) low field reactance
,e) low magnetic flux - ANSWER-C
The space or zone around a magnet through which lines of
force travel is termed
a) magnetic flux
b) permeability
c) reluctance
d) magnetic strength
e) magnetic field - ANSWER-E
Faraday discovered
a) the Right Hand Rule for conductors
b) that a conductor will have a voltage induced if it cuts
magnetic flux
c) the Left Hand Rule for motors
d) the Right Hand Rule for generators
e) that current flows from positive to negative - ANSWER-B
The best type of diagram for showing supply and distribution
systems is the
a) riser diagram
b) one-line diagram
c) elementary diagram
d) connection diagram
e) terminal and connection diagram - ANSWER-B
An electrical distribution system is composed of service,
feeders and
,a) secondary circuits
b) primary circuits
c) branch circuits
d) trunk circuits
e) tertiary circuits - ANSWER-C
The utility's responsibility will not go beyond the
a) first branch line
b) first overcurrent device
c) primary transformer
d) first trunk circuit
e) motor control centre
Introduction to Instrumentation - ANSWER-B
When a process variable has no method of sending information
to the final control element the system is known as
a) an automatic system
b) an open loop system
c) a cascading system
d) feedback system
e) feedforward system - ANSWER-B
An open loop control system requires
a) a transducer and a recorder
b) minimum deviation from set point
c) a very small amount of dead time or lag
d) constant attention
, e) two final control elements - ANSWER-D
A process variable which is adjusted in order to maintain or
achieve some desired value of another variable is termed the
a) process variable
b) final variable
c) manipulated variable
d) controlled variable
e) transmitting variable - ANSWER-C
A control loop controller
a) does not require a set point value
b) sends a signal to a primary element
c) measures the manipulated variable value, eliminating the
need of a primary element
d) will always eliminate deviation
e) constantly compares input signals to the set point - ANSWER-E
If a conductor is held stationary and a magnetic field is
moved across it, it forms what is known as
a) motor action
b) electromagnetism
c) generator action
d) transformer action
e) conduction
Magnetism and Electromagnetism - ANSWER-C
