Electrical final (ABSA 1) UPDATED ACTUAL Questions and CORRECT Answers
Resistance 1, 2, 3, 4
1. limits current flow
2. depends on temperature
3. depends on material
4. depends on dimensions
Conductive materials. gain resistance while temperature rises while others loose resistance
1) Gain resistance while temperature rises
while others lose resistance d
2) Have no resistance change with
temperature change
3) Always have resistance changing directly
with temperature
4) Can vary resistance directly or inversely
with temperature
a. 1, 3, 4
b. 2, 3
c. 2, 4
d. 1, 4
e. 1, 2, 3, 4
Free valence electrons flow from _______ b
when connected to an electrical supply.
a. positive to negative
b. negative to positive
c. positive to proton
d. negative to proton
e. positive to neutron
, Where an approximate constant speed is b
to be maintained between no-load and
full-load the DC motor to use would be:
Select one:
A. Compound.
B. Shunt.
C. Separately-excited.
D. Series.
E. Self-excited.
An electrical source would be in the form 1, 4
of a:
1. Battery
2. Magnet
3. Flux
4. Generator
The practical unit used to represent c
electrical load is:
a. impedance
b. Amp
c. ohm
d. farad
e. henry
Electric current flow depends on the c
number of charges:
a. between two points
b. per second
c. in motion
d. as a potential
e. per mechanical out put
DC motors are restricted to a starting c
current of about_____ percent of full load
current.
a. 50
b. 100
c. 150
d. 200
e. 250
The torque produced by the armature 1, 3, 4
conductors is a generator:
1. increase with load
2. decrease with load
3. opposes the driving torque
4. is load torque
The three basic ways in which a self-excited 1, 2, 3
generator field can be connected are
classified:
1. shunt generator
2. compound generator
3. series generator
4. parallel generator
Resistance 1, 2, 3, 4
1. limits current flow
2. depends on temperature
3. depends on material
4. depends on dimensions
Conductive materials. gain resistance while temperature rises while others loose resistance
1) Gain resistance while temperature rises
while others lose resistance d
2) Have no resistance change with
temperature change
3) Always have resistance changing directly
with temperature
4) Can vary resistance directly or inversely
with temperature
a. 1, 3, 4
b. 2, 3
c. 2, 4
d. 1, 4
e. 1, 2, 3, 4
Free valence electrons flow from _______ b
when connected to an electrical supply.
a. positive to negative
b. negative to positive
c. positive to proton
d. negative to proton
e. positive to neutron
, Where an approximate constant speed is b
to be maintained between no-load and
full-load the DC motor to use would be:
Select one:
A. Compound.
B. Shunt.
C. Separately-excited.
D. Series.
E. Self-excited.
An electrical source would be in the form 1, 4
of a:
1. Battery
2. Magnet
3. Flux
4. Generator
The practical unit used to represent c
electrical load is:
a. impedance
b. Amp
c. ohm
d. farad
e. henry
Electric current flow depends on the c
number of charges:
a. between two points
b. per second
c. in motion
d. as a potential
e. per mechanical out put
DC motors are restricted to a starting c
current of about_____ percent of full load
current.
a. 50
b. 100
c. 150
d. 200
e. 250
The torque produced by the armature 1, 3, 4
conductors is a generator:
1. increase with load
2. decrease with load
3. opposes the driving torque
4. is load torque
The three basic ways in which a self-excited 1, 2, 3
generator field can be connected are
classified:
1. shunt generator
2. compound generator
3. series generator
4. parallel generator
