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1st September 2015, 08:20 AM
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Join Date: May 2012
Re: GNFC placement procedure

As you want to get the Gujarat Narmada Valley Fertilisers & Chemicals Limited placement papers so here is the information of the same for you:

Q.1 The two windings of a transformer is
(A) conductively linked.
(B) inductively linked.
(C) not linked at all.
(D) electrically linked.
Ans : B

Q.2 A salient pole synchronous motor is running at no load. Its field current is switched off. The motor will
(A) come to stop.
(B) continue to run at synchronous speed.
(C) continue to run at a speed slightly more than the synchronous speed.
(D) continue to run at a speed slightly less than the synchronous speed.
Ans: B

Q.3 The d.c. series motor should always be started with load because
(A) at no load, it will rotate at dangerously high speed.
(B) it will fail to start.
(C) it will not develop high starting torque.
(D) all are true.
Ans: A

Q.4 The frequency of the rotor current in a 3 phase 50 Hz, 4 pole induction motor at full load speed is about
(A) 50 Hz.
(B) 20 Hz.
(C) 2 Hz.
(D) Zero.
Ans: C

Q.5 In a stepper motor the angular displacement
(A) can be precisely controlled.
(B) it cannot be readily interfaced with micro computer based controller.
(C) the angular displacement cannot be precisely controlled.
(D) it cannot be used for positioning of work tables and tools in NC machines.
Ans: A

Q.6 The power factor of a squirrel cage induction motor is
(A) low at light load only.
(B) low at heavy load only.
(C) low at light and heavy load both.
(D) low at rated load only.
Ans: A

Q.7 The generation voltage is usually
(A) between 11 KV and 33 KV.
(B) between 132 KV and 400 KV.
(C) between 400 KV and 700 KV.
(D) None of the above.
Ans: A

Q.8 When a synchronous motor is running at synchronous speed, the damper winding produces
(A) damping torque.
(B) eddy current torque.
(C) torque aiding the developed torque.
(D) no torque.
Ans: D

Q.9 If a transformer primary is energised from a square wave voltage source, its output voltage will be
(A) A square wave.
(B) A sine wave.
(C) A triangular wave.
(D) A pulse wave.
Ans: A

Q.10 In a d.c. series motor the electromagnetic torque developed is proportional to
(A) Ia
(B) (Ia)2
(C) 1/Ia
(D) 1/(Ia)2
Ans: B

Q.11 In a 3 – phase induction motor running at slip ‘s’ the mechanical power developed in terms of air gap power
(A) (s-1)Pg
( B) Pg/(1-s)
(C) (1-s)Pg
(D) s.Pg
Ans: C

Q.12 In a 3 – phase induction motor the maximum torque
(A) is proportional to rotor resistance r2
(B) does not depend on r2
(C) is proportional to sqrt(r2)
(D) is proportional to (r2)2
Ans: B

Q.13 In a d.c. machine, the armature mmf is
(A) stationary w.r.t. armature.
(B) rotating w.r.t. field.
(C) stationary w.r.t. field.
(D) rotating w.r.t. brushes.
Ans: C

Q.14 In a transformer the voltage regulation will be zero when it operates at
(A) unity p.f.
(B) leading p.f.
(C) lagging p.f.
(D) zero p.f. leading.
Ans: B

Q.15 The maximum power in cylindrical and salient pole machines is obtained respectively at load angles of
(A) 900,900
(B) <900,900
(C) 900,>900
(D) 900,<900
Ans: D

Q.16 The primary winding of a 220/6 V, 50 Hz transformer is energised from 110 V, 60 Hz supply. The secondary output voltage will be
(A) 3.6 V.
(B) 2.5 V.
(C) 3.0 V.
(D) 6.0 V.
Ans: C

Q.17 The emf induced in the primary of a transformer
(A) is in phase with the flux.
(B) lags behind the flux by 90 degree.
(C) leads the flux by 90 degree.
(D) is in phase opposition to that of flux.
Ans: C

Q.18 The relative speed between the magnetic fields of stator and rotor under steady state operation is zero for a
(A) dc machine.
(B) 3 phase induction machine.
(C) synchronous machine.
(D) single phase induction machine.
Ans: all options are correct

Q.19 The current from the stator of an alternator is taken out to the external load circuit through
(A) slip rings.
(B) commutator segments.
(C) solid connections.
(D) carbon brushes.
Ans: C

Q.20 A motor which can conveniently be operated at lagging as well as leading power factors is the
(A) squirrel cage induction motor.
(B) wound rotor induction motor.
(C) synchronous motor.
(D) DC shunt motor.
Ans: C

Q.21 A hysteresis motor
(A) is not a self-starting motor.
(B) is a constant speed motor.
(C) needs dc excitation.
(D) can not be run in reverse speed.
Ans: B

Q.22 The most suitable servomotor for low power applications is
(A) a dc series motor.
(B) a dc shunt motor.
(C) an ac two-phase induction motor.
(D) an ac series motor.
Ans: B

Q.23 The size of a conductor used in power cables depends on the
(A) operating voltage.
(B) power factor.
(C) current to be carried.
(D) type of insulation used.
Ans: C

Q.24 Out of the following methods of heating the one which is independent of supply frequency is
(A) electric arc heating
(B) induction heating
(C) electric resistance heating
(D) dielectric heating
Ans: C

Q.25 A two-winding single phase transformer has a voltage regulation of 4.5% at full-load and unity power-factor. At full-load and 0.80 power-factor lagging load the voltage regulation will be
(A) 4.5%.
(B) less than 4.5%.
(C) more than 4.5%.
(D) 4.5% or more than 4.5%.
Ans: C

Q.26 In a dc shunt motor the terminal voltage is halved while the torque is kept constant. The resulting approximate variation in speed ” ω” and armature current “Ia‘” will be
(A) Both ω and Ia are doubled.
(B) ω is constant and Ia is doubled
(C) w is doubled while Ia is halved
(D) w is constant but Ia is halved
Ans: B

Q.27 A balanced three-phase, 50 Hz voltage is applied to a 3 phase, 4 pole, induction motor. When the motor is delivering rated output, the slip is found to be 0.05. The speed of the rotor m.m.f. relative to the rotor structure is
(A) 1500 r.p.m.
(B) 1425 r.p.m.
(C) 25 r.p.m.
(D) 75 r.p.m.
Ans: D

Q.28 An alternator is delivering rated current at rated voltage and 0.8 power-factor lagging case. If it is required to deliver rated current at rated voltage and 0.8 power-factor leading, the required excitation will be
(A) less.
(B) more.
(C) more or less.
(D) the same.
Ans: B

Q.29 A ceiling fan uses
(A) split-phase motor.
(B) capacitor start and capacitor run motor.
(C) universal motor.
(D) capacitor start motor.
Ans: D

Q.30 A stepper motor is
(A) a dc motor.
(B) a single-phase ac motor.
(C) a multi-phase motor.
(D) a two phase motor.
Ans: D

Q.31 The ‘sheath’ is used in cable to
(A) provide strength to the cable.
(B) provide proper insulation.
(C) prevent the moisture from entering the cable.
(D) avoid chances of rust on strands.
Ans: A

Q.32 The drive motor used in a mixer-grinder is a
(A) dc motor.
(B) induction motor.
(C) synchronous motor.
(D) universal motor.
Ans: D

Q.33 A 1:5 step-up transformer has 120V across the primary and 600 ohms resistance across the secondary. Assuming 100% efficiency, the primary current equals
(A) 0.2 Amp.
(B) 5 Amps.
(C) 10 Amps.
(D) 20 Amps.
Ans: A

Q.34 A dc shunt generator has a speed of 800 rpm when delivering 20 A to the load at the terminal voltage of 220V. If the same machine is run as a motor it takes a line current of 20A from 220V supply. The speed of the machine as a motor will be
(A) 800 rpm.
(B) more than 800 rpm.
(C) less than 800 rpm.
(D) both higher or lower than 800 rpm.
Ans: C

Q.35 A 50 Hz, 3-phase induction motor has a full load speed of 1440 r.p.m. The number of poles of the motor are
(A) 4.
(B) 6.
(C) 12.
(D) 8.
Ans: A

1. Ankleshwar in India is known for the production of- Petroleum

2. CV Raman- The Nobel Prize in Physics 1930

3. Baba Budan Giri hill ranges of Karnataka –famous for coffee

4. The decision to effect the Partition of Bengal was announced in July 1905 by the Viceroy of India, Lord Curzon

5. PV Sindhu - Macau Open Grand Prix Gold title.

6. Santosh Trophy is an annual Indian football tournament

7. The Chola dynasty went into decline at the beginning of the 13th century

8. Bhramar Geet author- surdas

9. unit of distance – meter

10. KOHIMA- is the capital of Nagaland

11. Best film of filmfare awards 2013-Barfi

12. Speaker of lok sabha- elected by members of parliament

13. Merlin award- for Magic

14. Regur soil is also known as Black soil

15. The largest state in India in terms of geographical area is Rajasthan

16. The 2014 Winter Olympics, held in Sochi, Russia

17. The hardest part of the human body is the enamel that covers the teeth

18. Indian football captain Sunil Chhetri - 2013 AIFF Player of the Year by All India Football Federation

19. The foundations of the Indian National Movement were laid by Suredranath Banerjee with the formation of Indian Association at Calcutta in 1876.

20. Harsh Kumar Bhanwala- Chairman of the National Bank for Agriculture and Rural Development (NABARD). Bhanwala succeeds Prakash Bakshi, who retired in September.

21. Sharat Chandra Chattopadhyay - novel DEVDAS

22. The Sahitya Akademi India's - Founded on March 1954

23. Sahitya Akademi Yuva Puraskar 2013- Yogini Borkar (Konkani)

24. Indian National Congress-1885

25. Tarapur Atomic Power Station – first atomic plant

26. Entomology is the scientific study of insects, a branch of arthropodology

27. Balaghat mines – Madhya Pradesh

28. Article 80 of the Constitution lays down the maximum strength of Rajya Sabha as 250, out of which 12 members are nominated by the President and 238 are representatives of the States and of the two Union Territories.

29. X-rays were invented in 1895 by a German physicist named Wilhelm Conrad Röntgen

30. Premchand was born on 31 July 1880 in Lamahi, a village located near Varanasi (Banaras)

31.Who among the folowing was the Chairman of the Drafting Committee of the Indian Constution
(a) Rajendra Prasad
(b) C. Rajagopalachari
(c) Tej Bahadur Sapru
(d) B.R. Ambedkar
Answer: B.R. Ambedkar

32. Author of Godan- Munshi Premchand

33. Chandragupta Maurya was the founder of the Maurya Empire

34. Child Marriage Restraint Act 1929 popularly kwown as the Sharda Act after its sponsor Rai Sahib Harbilas Sarda to the British India Legislature in India.

35. The Khilji dynasty with the crowning of Jalaluddin Khilji by the nobles in the year 1290 A.D. Jalaluddin Khilji was the first Indian ruler of the Khilji dynasty.

36. Indus valley worshipped god- Pashupati

37. Unit of Power-Watt

38. Manas Tiger Reserve- Assam (Located in the Himalayan foothill bhabar area in the western Assam, Manas was originally a game reserve since 1928 and became a Tiger Reserve in 1974)

39. Vijayanagara empire establishment- 1336

40. Sahitya Academy main Award 2013 in Hindi- Mridula Garg


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