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WorksheetsCFV30122 - Theory Test
Total questions: 50
Worksheet time: 50mins
What function we used goggle?
Close the eyes
Block the face
Block the noose
Close up all the face
Artificial respiration is the act of simulating __________.
respect
respiration
responsible
respitationality
Rescue breathing should continue at a normal breathing pace of about___________________
2 times per minute
5 times per minute
10 times per minute
12 times per minute
What the name for CPR ?
Car Pulmonari Rescuciation.
Cardiac Pulnari Rescuciation.
Cardiac Pulmonari Resciation.
Cardiac Pulmonari Rescuciation.
Which current ampere can make the people can be injured?
50 mA
10 mA
1 mA
0.5 mA
What can be used to control the flow of electricity?
Key
Switch
Handle
Stereng
The main use Enamelled copper wire is
Make a simple circuit wiring
Making a coil on an electric motor
Making a home electrical circuit wiring
Making radio wiring and electronic components
The best types of wire used to make the wiring on the plug 3 pin 13 A is
Three-core wire
Single core wire
Twin core wire
Single strand wire
All statements under the fuse is one exception
Fuses are only available in 3-pin plug 15A
Fuses used to switch electrical appliances
Fuses are used to protect circuits and electrical appliances
Fuse will continue to function even excessive electric current through it
A transformer has 100 turns in primary winding and 20 turns in secondary winding, primary voltage is 240V. Calculate the secondary voltage value?
48 mV
4.8 V
48 V
4.8 kV
From question 7 calculation, the transformer is a _________.
Step up transformer.
No step transformer
Isolation transformer
Step down transformer.
What is a general function of a transformer?
Step up a voltage
Step down a voltage.
Step up or down a voltage
Step down a current quantity.
Which connection of a transformer is connected to a load?
Casing
Ground terminal
Primary winding
Secondary winding
A transformer consist a coil called _________.
Winding.
Small coil.
Large coil.
Transparent coil
A basic transformer is an electrical device constructed of _____ coils.
2
3
4
5
Which is not true of types core materials for the transformer?
Air core
Iron core.
Steel core.
Ferrite core.
Which connection of transformer is connected to a supply voltage?
Casing.
Primary winding.
Ground terminal.
Secondary winding.
Calculate the secondary current. When Npri = 200 , Nsec = 400 and Ipri = 2A.
1 mA
4 mA
1 A
4 A
Dc motor convert__________________ into _________________ energy
Kimia – Electrical
Kimia – Mechanical
Electrical – Mechanical
Mechanical - Electrical
Which is not in the type of DC motor?
Shunt motor
Series motor
Compound motor
Shaded pole motor
Question number 21, refer figure 1.
Refer to figure 1, what is a type of DC motor?
Shunt motor.
Split phase motor
Compound motor
Shaded pole motor
The device that converts electrical energy into mechanical energy is____
Motor
Generator
Stepper Motor
AC and DC Machine.
This magnetic field induces a _________ in the rotor and it begins to rotate.
Voltage
Current
Frequency
Resistance
The most important factors will consider for shaded pole motors are ________.
Cost and size
Size and horsepower
Low cost and maintenance
Winding and construction
A Split Phase Motor is generally operated on ______ volts.
115
120
150
240
Choose the correct statement about the Universal Motor ?
DC series Motor connected to Shunt Motor.
DC Shunt Motor connected to a Series Motor.
DC Shunt Motor connected to both AC and DC.
DC Series Motor connected to both AC and DC
Which of the following is not classified as an Capacitor Motor ?
Synchronous Motor
Capacitor Start Motor
Two Value Capacitor Motor
Permanent Split Capacitor Motor
Compound motor commonly employed for __________.
I. Elevator
II. Vacuum
III. Electrical equipment
IV. Air compressor
I only
I, II only
I, IV only
I, II, III only
The most important factors will consider for shaded pole motors are ________.
Cost and size
Size and horsepower
Winding and construction
Low cost and maintenance
All of a devices is used a split phase motor except
Refrigerator
Water pump
Vacuum cleaner
Washing machine
The split phase motor has two field windings. What are the names of field winding?
Starting winding & primary winding
Running winding & starting winding
Stopping winding & running winding
Primary winding & secondary winding
Which is the generally ranges size horsepower for split phase motor ________.
¼ to ½ horsepower
½ to 1 horsepower
1/20 to ½ horsepower
1/20 to ¼ horsepower
Speed of rotation of the output shaft is measured in ______________ .
m/s
RPM
Km/h
Mile nautical
Which is not in the types of speed motor control
Fan KDK model
Floor – Type Fans
Wall and Desk Fan
Fan for unit Heaters
Servo motors may be made from several motor types, the most common being except _________.
Driven machine
Ac servo motors
Brushed DC motor
Brushless DC motor
The speed for shunt motor can be control by using a ________.
SCR
Rheostat
Transistor
Capacitor
All of a devices is used a split phase motor except _________.
Blower
Refrigerator
Water pump
Washing machine
The starting winding also known as ________.
Main winding
Primary winding
Auxiliary winding
Secondary winding
The suited method to control speed for shaded pole motor by _________.
Using rheostat.
Variation of frequency.
Variation of resistance.
Variation of applied voltage.
The starting winding also known as ________.
Main winding
Primary winding
Auxiliary winding
Secondary winding
Three Speed that is use in Split Phase Motor except _________.
one run winding
one start winding
one auxiliary winding
one start auxiliary winding
________________use position feedback to close the control loop
Servo controllers
SCR or thyristor drive
Brushed DC motor speed or torque controls
Pulse width modulation(PWM) or Chopper Drives
An electrical ___________________consists of an electric motor and a speed controller or power converter plus auxiliary devices and equipment
thyristor drive
chopper drives
motor control center
adjustable-speed drive
The rotor speed of a DC motor depends upon the __________applied across the motor; the higher the voltage across the motor leads, the higher the rotor speed.
Current
Voltage
Resistor
Capacitor
The _______________ will control whether the motor is on or off, and will control the motor speed.
Potentiometer
Rheostat
Switch
Lamp
How the three phase winding are a part of each location ?
90 0 a part of each phase.
120 0 a part of each phase.
180 0 a part of each phase
270 0 a part of each phase.
The transformer is part of a laboratory power supply and has 50 turns in the primary and 10 turns in the secondary. What is the secondary voltage is
Vs = 120 Vrms?
2.4 V
24 V
240 V
2400 V
If the size of the cable were given 7 / 1.04 mm and change the size of the area cross section. What is area?
2 mm2
4 mm2
6 mm2
8 mm2
The speed of a dc series motor
Increase with an increase in load
Decrease with an increase in applied voltage
Decreased with increase in load
Decrease with decrease in load
The DC compound motor is suitable for
I Crane
II Milling machine
III Compressors
IV Crushers
I and II
I, II and III
III and IV
IV only
