Past Board Exam Terms: From “Team 👀”

One of these does not affect the value of the capacitance in a capacitor.
Distance between plates
Thickness of the plates
Area of the plates
Dielectric
Which of the following describes a streamline?streamline
I only
I & II
II only
I, II & III
The simplest and most common grades of steel belong to the group of:
Boron Steels
Carbon Steels
Neon Steels
Krypton Steels
The ability to meet debts as they become due is known as:
Solvency
Leverage
Insolvency
Liquidity
In cable capacitor, voltage gradient is maximum at the surface of the
Conductor
Insulator
Sheath
Earth
The charge of a hole is
Zero
Equal to that of a proton
Equal to that of an electron
Equal to that of a neutron
Unit of retentivity?
AT
AT/Wb
AT/m
Dimensionless
Joule found out that the heat produced in a current carrying conductor is proportional to
The square of current
The current
The square of resistance
Inversely proportional to time
A switch is connected across 200v supply. What is the voltage across the switch if its closed?
0
220
110
Infinity
Centrifugal switch disconnects the auxiliary winding of the motor at about ___ percent of synchronous speed.
30-40
70-80
80-90
100
The material commonly used for insulation in high voltage cables is
Lead
Paper
Rubber
Glass
For a series RLC circuit at resonance, the current amplitude is ____ for a fixed voltage amplitude and the pf is ____.
Minimum, Zero
Minimum, Unity
Maximum, Zero
Maximum, Unity
Transient current in an RLC circuit is oscillatory when
R=0R= 2√L/C
R>2√L/C
R<2√L/C
R= 2√L/C
The electric analog of a spring constant k is:
L
1/L
C
1/C
Commercially used pressure measuring device today I
Bourdon tube gauge
Kelvin gauge
Manometer
Barometer
Fuse for overhead primary distribution
Fast acting
Dual element
Expulsion
Cartridge
Which one is the safest type of insulation for indoor wiring installations specially residential and commercial buildings
XPLE
Polyvinyl chloride
Polyethylene
Thylene propylene rubber
The fault current that exists immediately after the fault is known as _____
Sub transient current
steady state
Unsteady state
transient current
Which of the following is the eddy current loss is not proportional to?
Square of the flux density
The square of the load current of the laminated core
Square of frequency
Square of thickness
Which of the following statements counts J from 1 to 11 in increments of 2?
DO 5 J=1, 2 , 11
DO 5, J=1, 11, 2
DO 5 J=1.11.2
DO 5 J=1,11,2
Shunt generators are most suited for stable parallel operation because of their ________ voltage characteristics
Drooping
identical
Linear
rising
The __________ generator has poorest voltage regulation
series
Compound
Shunt
over compound
A special type of diode used to regulate dc voltage supply
Thyristors
Zener
Diac
Shockley
Why are transmission towers sometimes constructed in lattice type and sometimes in pole type although they have the same capacity and voltage rating?
Reliability
Wind load
Right of way
Safety
These are high intensity discharged lamps which are usually installed in outdoor and wide areas and are mounted on poles whereas for indoors these are used for high ceiling applications.
Recessed
Surfaced
High bay
Low mount
A limit switch is used to shut off the power when _____ a definite limit.
Current exceeds
Voltage falls below
The travel reaches
frequency exceeds
An SCR combines the features of
A rectifier and resistance
A rectifier and capacitor
rectifier and transistor
a rectifier and inductor
How are multiple stop push buttons connected in a control circuit?
Combination series – parallel
Parallel
Gang
Series
What is the percent slip of the synchronous motor when running?
3
2.5
1
None of these
What is the device that converts DC power to AC?
Converter
Inverter
SCR
Rectifier
Inductance is measured in terms of capacitance and resistance by
Schering bridge
Anderson bridge
Maxwell-Wein bridge
Wein bridge
Buchholz relay is used in ______ protection:
Generator
Transformer
line
All of the above
When was the RA 7920 approved by President Fidel V. Ramos?
February 24, 1995
February 25, 1995
February 12, 1995
February 21, 1995
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