Inspector of Factories • Paper-I
Which of the following are integrating instrument?
A)
Ammeters
B)
Voltmeters
C)
Wattmeters
D)
Ampere-hour and watt-hour meters
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Wattmeters' (Option C).
Inspector of Factories • Paper-I
The voltage coil of a single phase house service energy meter -
A)
is highly resistive
B)
is highly inductive
C)
is highly capacitive
D)
has a phase angle equal to load power factor angle
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'has a phase angle equal to load power factor angle' (Option D).
Inspector of Factories • Paper-I
For measuring a very high resistance we should use -
A)
Kelvin’s double bridge
B)
Wheat stone bridge
C)
Megger
D)
None of these
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Kelvin’s double bridge' (Option A).
Inspector of Factories • Paper-I
The phenomena of ‘creeping’ occurs in -
A)
Ammeters
B)
Voltmeters
C)
Wattmeters
D)
Watt-hour meters
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Watt-hour meters' (Option D).
Inspector of Factories • Paper-I
Susceptibility is positive for -
A)
ferromagnetic substances
B)
paramagnetic substances
C)
non-magnetic substances
D)
none of these
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'ferromagnetic substances' (Option A).
Inspector of Factories • Paper-I
The household energy meter is -
A)
an indicating instrument
B)
a recording instrument
C)
an integrating instrument
D)
none of these
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'none of these' (Option D).
Inspector of Factories • Paper-I
An intrinsic semiconductor at a temperature of absolute zero behaves like an insulator because of -
A)
Non-availabilty of free electrons
B)
Non-recombination of electrons with holes
C)
Low drift velocity of free electrons
D)
Low (almost zero) electron energy
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Low (almost zero) electron energy' (Option D).
Inspector of Factories • Paper-I
Which of the following materials is preferred for transformer cores operating in microwave range?
A)
Ferrite
B)
Silicon steel
C)
Superalloy
D)
Copper
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Silicon steel' (Option B).
Inspector of Factories • Paper-I
Magnetic recording tape is most commonly made from -
A)
small particle of iron
B)
silicon iron
C)
ferric oxide
D)
silver nitrate
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'small particle of iron' (Option A).
Inspector of Factories • Paper-I
An ammeter is a -
A)
secondary instrument
B)
absolute instrument
C)
recording instrument
D)
integrating instrument
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'absolute instrument' (Option B).
Inspector of Factories • Paper-I
In the network shown in below, what is the current I in the direction shown? [Network with 10V, 4 ohm, 1 ohm resistors, 10A source]
A)
0
B)
1/3 A
C)
5/6 A
D)
4 A
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '4 A' (Option D).
Inspector of Factories • Paper-I
Which of the following bridges is used to measure power factor?
A)
Wein’s bridge
B)
Maxwell bridge
C)
Schering bridge
D)
Kelvin bridge
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Kelvin bridge' (Option D).
Inspector of Factories • Paper-I
Which of the following theorems can be applied to any network- linear or non-linear, active or passive, time-variant or time-invariant?
A)
Thevenin theorem
B)
Norton theorem
C)
Tellegen theorem
D)
Superposition theorem
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Superposition theorem' (Option D).
Inspector of Factories • Paper-I
Upto about 4% silica is added in iron to be used as a soft magnetic material. The major reason for this is to -
A)
increase permeability of the material
B)
increase electrical resistivity of the material
C)
increase the coercive force
D)
increase the saturation flux density
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'increase the saturation flux density' (Option D).
Inspector of Factories • Paper-I
Where is the Laplace’s equation valid?
A)
Only in free space
B)
Only in conductors
C)
Only in charge free dielectric regions
D)
Only in cavities bounded on all sides by conducting walls
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Only in charge free dielectric regions' (Option C).
Inspector of Factories • Paper-I
The superposition theorem is essentially based on the concept of -
A)
duality
B)
linearity
C)
reciprocity
D)
non-linearity
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'reciprocity' (Option C).
Inspector of Factories • Paper-I
Kirchhoff’s current law is applicable to only -
A)
closed loops in a network
B)
electronic circuits
C)
junctions in a network
D)
electric circuits
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'electric circuits' (Option D).
Inspector of Factories • Paper-I
Magnetic moment is the -
A)
pole strength
B)
vector strength
C)
scalar strength
D)
universal constant
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'pole strength' (Option A).
Inspector of Factories • Paper-I
Which of the following is an analogue transducer?
A)
Strain gauge
B)
Thermistor
C)
LVDT
D)
All of these
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'All of these' (Option D).
Inspector of Factories • Paper-I
A 12 bit A/D converter has a range 0 – 10 V. What is the approximate resolution of the converter?
A)
1 mV
B)
2.5 mV
C)
1.5 µV
D)
12 mV
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '2.5 mV' (Option B).
Inspector of Factories • Paper-I
For measurement on high voltage capacitors, the suitable bridge is -
A)
Wein bridge
B)
Modified De Sauty’s bridge
C)
Schering bridge
D)
None of these
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Wein bridge' (Option A).
Inspector of Factories • Paper-I
The dual of parallel RC circuit is -
A)
series RC circuit
B)
series RL circuit
C)
parallel RC circuit
D)
parallel RL circuit
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'series RC circuit' (Option A).
Inspector of Factories • Paper-I
An electric circuit with 10 branches and 7 nodes will have -
A)
3 loop equations
B)
4 loop equations
C)
7 loop equations
D)
10 loop equations
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '3 loop equations' (Option A).
Inspector of Factories • Paper-I
Cauer and Foster forms of realizations are used only for -
A)
driving point reactance functions
B)
transfer reactance functions
C)
driving point impedance functions
D)
transfer impedance functions
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'driving point impedance functions' (Option C).
Inspector of Factories • Paper-I
In a network made up of linear resistors and ideal voltage sources, values of all resistors are doubled. Then the voltage across each resistor is -
A)
Doubled
B)
Halved
C)
Decreased four times
D)
Not changed
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is 'Not changed' (Option D).
