Answer Posted / study

Electrical Circuits and Networks:

1. The ratio of voltage and electric current in a closed
circuit
(a) remains constant (b) varies (c) increases (d) falls
2. The resistance of a wire varies inversely as
(a) area of cross section (b) length (c) resistivity
(d) temperature
3. The electrical conductivity of metals is typically of
the order of ( in ohm-1 m-1)
(a) 10 to the power of 7 (b) 10 to the power of 5 (c)
10 to the power of -4 (d) 10 to the power of -6
4. Four resistors, each of resistance R ohms are
available. The minimum resistance of the combination will be
(a) 4R (b) R (c) R/4 (d) R/8
5. The elements which are not capable of delivering
energy by its own are known as
(a) unilateral elements (b) non-linear elements (c)
passive elements (d) active elements
6. The magentic susceptibility of paramagnetic material is
(a) less than zero (b) less than one but positive (c)
greater than one (d) equal to zero
7. The Direction of current in an ac circuit
(a) is from positive to negative (b) is always in one
direction (c) varies from instant to instant (d)Cannot be
determined
8. which of the following statements associated with
purely resistive circuits is correct?
(a) PF is unity (b) Power consumed is zero (c) Heat
produced is zero (d) PF is zero
9. The magnetic field energy in an inductor changes from
maximum value to minimum value in in 5m sec when connected
to an ac source. The frequency of the source is
(a) 20 Hz (b) 50 Hz (c) 200 Hz (d) 500 Hz
10.



Control Systems:

1. Electronic control systems have the serious draw-backs of
(a) low reliability (b) operational difficulty (c)
temperature sensitiveness (d) all of above
2. The system whose characteristic equation has the
following roots is marginally stable
(a) -j, j, -1,1 (b) -3,-2,0 (c) -2+3j, -2-3j, -2 (d)
-3,-2,-1
3. A phase log compensation will
(a) improve relative stability
(b)increase the speed of response
(c)increase band-width
(d) increase overshoot
4. For Nyquist plot we use

1. open loop function
2. closed loop function
3. characteristic equation
4. any of the above

# A system with gain margin close to unity or a phase margin
close to zero is

1. highly stable
2. oscillatory
3. relatively stable
4. none of these

# Root locus diagram exhibits the

1. frequency response of a system
2. poles of the transfer function for a set of parameter
values
3. bandwidth of system
4. all of the above

# Increase in the gain K makes the system

1. more stable
2. unstable
3. none of above

# The transfer function of a system is used to determine

1. the output for a given input
2. the type of system
3. the input for a given output
4. the steady state gain

# In a servo system the voltage induced in the control
transformer rotor is the

1. error voltage
2. driving voltage
3. opposing voltage
4. none of these

# With the feedback system, the transient response

1. decays slowly
2. decays rapidly
3. rises slowly
4. rises quickly



Measurements and Instrumentation

1. Which of the following types of instrument is an
integrating instrument?

1. power factor meter
2. energy meter
3. wattmeter
4. frequent meter

# Which of the material is used for the ’swamping’
resistance that is connected in series with the working coil
of a voltmeter?

1. Constantan
2. Manganin
3. Eureka
4. Nichrome

# What are used to increase the range of ammeters.

1. Multipliers
2. Shunts
3. Control Springs
4. Potential transformers

# Which voltmeter do you select for measuring 50KV DC?

1. Moving Coil Voltmeter
2. Hot wire voltmeter
3. Electro Dynamo meter
4. Electrostatic Voltmeter

# Which of the following you will prefer to extend the range
of an ac voltmeter?

1. Low series resistance
2. high resistance in parallel
3. CT
4. PT

# High AC voltages are usually measured with

1. magnetic voltmeter
2. inductive voltmeter
3. potential transformers with voltmeters
4. current transformers and voltmeters

# Creeping is the phenomena occurs in

1. voltmeter
2. wattmeter
3. energy meter
4. ammeter

would anybody tell me what is the syllabus of TNPSC group- I &group-II exams? AND also, i want to know the best book for that.

1944

---

i am preparing for bank of baroda. plz suggest me hw to start prepartion.which books to refer. which topics to cover.my e mailid is nehaagarwal890@gmail.com

1938

---

i have apply for RBI grade B officer exam.i am confused about the exam preparation.please guide me about any book for preparation.my email id nikhilbnkr@gmail.com

1823

---

what is current

2548

---

i have cleared the LIC Housing finance Ltd written exam for the post of asisstant...the interviews are to conducted from 17feb...please guide me on how to prepare for the interview..what all questions are likely to be asked ?

2612

---

How do you print the single quotation ('),double quotaion (") using Kruti Dev font in hindi?

1829

---

who is gazated M R O? M R O means what?

1860

---

what are the promotions after selection of acio in ib

3005

---

i am studing engineering 3rd year.is necessary to submit transfercertificate from my college during certificate verifications of postal assistant job.because i dont want to discountine my studies

1842

---

sir i want to know about drug inspector its exam basic requirement and all please help me .

1735

---

hi could anyone tell me that what is the syllabus and qn model for HPCL engineering trainee exam????

1856

---

Is there any promotion of clerks in PUNJAB CIVIL SECRETARIAT AND EXCISE & TAXATION DEPARPTMENT PUNJAB to INSPECTOR grade.

2775

---

i appeared in the interview of cabinet secreatariat DFO tele in shillong in feb 2013.Still now i haven't got any information about the result. Has anyone got the police verification

3341

---

what is the 1th question

1974

---

ny body have previous year question paper of deputy field officer (tele) main exam then kindly send me inks or paper plzzz i need help for this. i cant find vypathak@gmail.com

2456

---