ENGINEERING CAREER AND STUDY MATERIALS

1. The insulation between the commutator systems is- a) Glass (b) Bakelite (c) Mica  (d) Wood Answer: (c) Mica  2.What will be total emf, if 4 cell of 1.5V each are connected in series - a) 3V b) 9 v c) 6V d) 0.375V Answer: c) 6V 3.Winding of armature of motor, the wire used is- a) Copper wire b) fuse wire c) aluminium wire d) super enameled insulated copper wire

Question: Function of Choke in the fluorescent tube circuit is to - (a)Suppress the starting surge (b) Reduce the starting current               (c) Reduce the flickering (d) Initiate the arc and stabilize it Answer:  (d) Initiate the arc and stabilize it

Question: The main function of a Starter is- (a) To limit the rush current at starting (b) to start the counting of time of motor running (c) To developed high starting torque (d) to bring motor quickly to full speed Answer: (a) To limit the rush current at starting

Question: I.E. Rule’s for ___________________ Options; (a) For safety and security  (b) for better power generating (c) both of them   (d) none Answer:  (a) For safety and security 

Question: Value of Power factor lies between_____________________ Options: (a) +1 to -1 (b)+2 to -2 (c) 0 to 1 (d) none of these Answer:  (c) 0 to 1

1. Which of the following motors is used in tape-recorders ? A) Hysteresis motor B) Capacitor-run motor C) Reluctance motor D) Universal motor 2. To generates a 50Hz frequency, the RPM of a generator is must be A. 1500 B. 3000 C. 750 D. no of the above 3. On which rule the d.c motor works? A. Flemings right hand rule B. Fiemings left hand rule C. Both rules D. None 4. diode is on state__________ A. forward bias B. revers bias C. both 1 and 2 D. none 5. The friction losses in Real Transformers are _________? A.0% B.5% C.25% D.50% 6. carbon is an example of ............ ? A. compound B. mixture C. element

Question # 1. Euler’s formula holds good only for (1) Short columns (2) Long columns (3) Both short and long columns (4) Intermediate columns Question # 2. The vehicle used in case of enamel paints is usually (1) Linseed oil (2) Water (3) Varnish (4) None of the above Question # 3. Closed contours of decreasing values towards their centre, represent a (1) Hill (2) Depression (3) Saddle (4) River bed Question # 4. Maximum bulking of sand is likely to occur at a moisture content of (1) 5% (2) 8% (3) 11% (4) 14% Question # 5. The operation of revolving a plane table about its vertical axis so that all lines on the sheet become parallel to corresponding lines on the ground is known as (1) Levelling (2) Centering (3) Orientation (4) Setting Question # 6. Which of the following aggregates gives maximum strength in concrete ? (1) Rounded aggregate (2) Elongated aggregate (3) Flaky aggregate (4) Cubical aggregate Question # 7. Plasticizers and s

1. In SQL, which of the following is not a DDL command A.RENAME B. GRANT C. REVOKE D. UPDATE 2. A page replacement policy is not necessary for A. Fully associative caches B. Set associative caches C. Directly mapped caches D. Write- through caches 3. Start and Stop bits do not contain any ‘information’ but are used in serial communication for the following A. Error detection B. Synchronization C. Error Correction D. Slowing down the communication 4.  Which of the following features cannot be captured by CFGs A. Syntax of if -then-else statement B. Variable names of arbitrary length C. Whether a variable has been declared before its use D. Syntax of recursive procedures 5. The number of select input lines in a 8- to -1 multiplexer is A.1 B.8 C.256

*1 Which one of the following statements is NOT TRUE for a supersonic flow? A) Over a gradual expansion, entropy remains constant B) Over a sharp expansion corner, entropy can increase C) Over a gradual compression, entropy can remain constant D) Over a sharp compression corner, entropy increases *2 A supersonic airplane is expected to fly at both subsonic and supersonic speeds during its whole flight course. Which one of the following statements is TRUE? (A) Airplane will experience less stability in pitch at supersonic speeds than at subsonic speeds (B) Airplane will feel no change in pitch stability (C) Airplane will experience more stability in pitch at supersonic speeds than at subsonic speeds (D) Pitch stability cannot be inferred from the information given *3 Which one of the following criteria leads to maximum turn rate and minimum radius in a level turn flight? A) Highest possible load factor and highest possible velocity B) Lowest possible load factor and lo

1.  As the concentration of point defects in a crystal increases, its configurational entropy A) does not change B) decreases C) increases D) initially increases and then decreases 2. Critical value of the Gibbs energy of nucleation at equilibrium temperature is A) zero B) infinite C) positive D) negative 3. With respect to the matrix of Al-Cu alloys, G-P zones are A) coherent B) incoherent C) semi-coherent D) chemically indistinguishable 4. Which one of the following techniques does NOT require quenching to obtain final case hardness? A) Flame hardening B) Induction hardening C) Nitriding D) Carburizing

1.Fire is a combination of a) Fuel, light and Wood, oxygen b) Fuel, heat and carbon dioxide c) Fuel, heat and oxygen d) Fuel, light and nitrogen and Carbon Dioxide e) None of the above Answer:  (c) fuel, heat and oxygen 2. The best way of avoiding accident is by a) Doing work in proper way without PPE b) Doing work in one's own way c) Using safety equipment d) Observing safety rules related to job, machine and workplace  e) None of the above Answer:  d) Observing safety rules related to job, machine and workplace  3. In case of an accident, the victim should immediately be a) Asked to take rest b) Enquired about the accident c) left to himself without treatment d) Attended  e) None of the above Answer:  d) Attended 

* A 1.5mm displacement of tool point in boring operation will result in a change in the diameter equal to? A) 1.65 mm B) 2.5 mm C) 4 mm D) 3 mm Answer: D) 3 mm * The temperature to which a work piece is heated depends on the material and the type of forging process, the temperature range for forging low carbon steel is? A) 700 - 900 Degree Celsius B) 800 - 1300 Degree Celsius C) 450 - 820 Degree Celsius D) 450 - 600 Degree Celsius Answer: B) 800 - 1300 Degree Celsius * Which taper is used on spindle nose of the lathe head stock? A) Morse taper B) Brown and sharp taper C) Thermo Taper D) Yellow Taper Answer: A) Morse taper

* The material with lowest resistivity is A) constantan. B) silver. C) manganin. D) nichrome. Answer*: B) silver. * Phenol and Formaldehyde are polymerised to a resultant product known as (A) PVC. (B). teflon. (C) polyester. (D) bakelite Answer*: (D) bakelite * Dielectric materials are (A) Insulating materials. (B) Semiconducting materials. (C) Magnetic materials. (D) Ferroelectric materials. Answer*: (A) Insulating materials. *The property due to which the resistance of some metal or compound vanishes under certainconditions is (A) Semi conductivity. (B) Super conductivity. (C) Curie point. (D) Magnetostriction. Answer*: (B) Super conductivity. * Thermocouples are used for the measurement of (A) temperature. (B) pressure. (C) Couples (D) density. Answer*: (A) temperature.

1. Which of the following does not change in a transformer ? (a) Frequency (b) Voltage (c) power (d) auto set Answer: (a) Frequency 2. No-load speed of which of the following motor will be highest ? (a) Shunt motor (b) Differentiate compound motor (c) Cumulative compound motor (d) Series motor Answer: (d) Series motor 3. Laminations of core are generally made of (a) Iron (b) silicon steel (c) carbon dioxide (d) stainless steel particle Answer: (b) silicon steel Electrical Engineering questions and answers for competitive exams   4. In a transformer the energy is conveyed from primary to secondary (a) by the flux (b) through air (c) through cooling coil (d) Through the air tub Answer:  (a) by the flux 5.  Which of the following could be lamina-proximately the thickness of laminations of a D.C. machine ? (a) 0.005 mm (b) 0.205 mm (c) 5.5 m (d) 0.5 m Answer:  (d) 0.5 m 6. The direction of rotation of a D.C. series motor can be changed by (a) interch

1. Explain USB Port (Universal Serial Bus). Answer: a. Give the specifications of Laser printer.  b. It is a plug and play interface between computers and add on devices. 2. It is a high speed serial bus Answer: a. Buffer size varies from 4MB to 32 MB  b. Speed varies from 4 PPM to 24 PPM.  c. Resolution varies from 600 to 1200 dots per inch.  d. Can print color images. 3. Give the specifications of inkjet printer. Answer: a. Speed varies from 1PPM to 12 PPM  b. Resolution is around 300 dots per inch.  c. Buffer size varies from 1 MB to 4 MB 4. Expand DDR RAM. Answer: Double Data Rate Random Access Memory. 5. Give the specifications of dot matrix printer. Answer: a. Speed varies from 30 to 300 characters per second.  b. Buffer size varies from 1K to 64 K.  c. Print head normally has 9 pins to 24 pins.