Prepare for the APPSC Inspector of Factories (Electrical) recruitment examination with official previous years' solved question papers across Electrical Circuits & Machinery, Power Generation, Transmission & Distribution, Industrial Substation Design, CEA (Measures Relating to Safety & Electric Supply) Regulations 2010, Indian Electricity Rules 1956, Factories Act 1948 (Electrical Safety Provisions), Earthing Practices (IS 3043), Flameproof Apparatus for Hazardous Explosive Atmospheres (IS/IEC 60079), Protection Relays, and Industrial Fire Safety Systems.
Marking pattern: +1.00 positive, -0.33 (1/3rd) negative marking (Official APPSC Technical CBT Scheme; 150 Questions, 150 Marks).
The positive sequence component of voltage at the point of fault is 0 (zero) when it is a:
The cost of generation is theoretically minimum, if:
Load flow study is carried out for:
The diagonal elements of a nodal admittance matrix are strengthened by adding:
The normal practice to specify the making current of circuit breaker is in terms of :
If the power transmitted along a transmission line at unity power factor is less than SIL, then the line appears:
An induction motor may be made to generate a.c. power by:
In planning machine drives the motor used is:
In punches, presses and shears the following motors are used:
(i) DC series motor
(ii) DC compound motor
(iii) SRIM without flywheel
(iv) SRIM with flywheel
From above choose the correct answer:
The ratio between the bandwidth of closed loop system to bandwidth of open loop system is:
In a closed loop control system, the feedback shall:
(i) Reducing sensitivity
(ii) Improving transient response
(iii) Minimizing the effects of disturbance signals
(iv) Reduces the gain of the system
(v) Introduces the possibility of instability
(vi) Increases the gain of the system
From the above, choose the correct answer:
Regenerative feedback is used for:
Synchros are commercially known as:
(i) Selsyn
(ii) Autosyn
(iii) Aerosyn
(iv) Delsyn
From the above which of the following is the correct answer?
Unit-ramp input for type-1 system, the steady state error shall become:
Irrespective of initial conditions in the absence of the input, the output tends to 0 (zero). This stability concept is known as:
The relative stability of a control system is directly related to the location of:
Root locus technique is applicable for:
(i) SIMO system
(ii) MISO system
(iii) Single loop system
(iv) Multiple loop system
From the above the correct answer is:
Time response analysis is suitable for the following input signals:
(i) Step
(ii) Sinusoidal
(iii) Cosine wave
(iv) Ramp
(v) Parabolic
From the above the correct answer is:
Frequency response analysis is suitable for the following input signal:
(i) Step
(ii) Sinusoidal
(iii) Cosine wave
(iv) Ramp
(v) Parabolic
From the above the correct answer is:
A transfer function which has one or more zeros in the right half s-plane is known as:
For the Nyquist stability criterion, computation of ________ is not necessary:
(i) open loop zeros
(ii) open loop poles
(iii) closed loop zeros
(iv) closed loop poles
From the above the correct answer is:
Which compensator improves the steady-state behaviour of a system?
Which compensator improves the transient response of the system?
Which compensator improves both the transient and steady state response of the system?
In torque-current analogy, which is the analogous quantity for mass (M):