ENGINEERING CAREER AND STUDY MATERIALS

Question No.1. A d.c. shunt motor runs at no load speed of 1140 r.p.m. At full load, armature reaction weakens the main flux by 5% whereas the armature circuit voltage drops by 10%. The motor full load speed in r.p.m. is (A) 1200 (B) 1203 (C) 1000 (D) 1080 Answer: (D) 1080 Question No.2 The voltage at the two ends of a transmission line are 132 KV and its reactance is 40 ohm. The Capacity of the line is (A) 251.5 MW (B) 217.8 MW (C) 435.6 MW (D) 500 MW Answer: (C) 435.6 MW Question No.3. The gravity controlled instrument has crowded scale because current is proportional to (A) balancing weight (B) deflection angle (C) sine of deflection angle (D) Location of CT Ans: (C) sine of deflection angle Question No.4. For LV applications (below 1 kV), ______________ cables are used. (A) Paper insulated. (B) Single core cables. (C)Plastic. (D) Oil filled. Answer: B) Single core cables. Question No.5. The eddy current loss in an a-c electric motor...

Electrical Engineering Questions with Answer 2017 Question # 1. The drive motor used in a mixer-grinder is a (A) universal motor. (B) induction motor. (C) synchronous motor. (D) dc motor. Ans: (A) universal motor. Question # 2. The direction of rotation of hysteresis motor is reversed by  (A) Reversing supply lead  (B) Shift shaded pole with respect to main pole  (C) Either A or B  (D) Neither A nor B Ans: (B) Shift shaded pole with respect to main pole Question # 3. Alternating current is measured by (A) induction ammeter (B) permanent magnet type ammeter (C) electrostatic ammeter (D) moving iron repulsion type voltmeter Ans: (A) induction ammeter Question # 4. A 3-phase, 400 votts, 50 Hz, 100 KW, 4 pole squirrel cage induction motor with a rated slip of 2% will have a rotor speed of (A) 1500 rpm (B) 1570 rpm (C) 1530 rpm (D) 1470 rpm Ans: (D) 1470 rpm Question # 5. The torque, in a _____________is prop...

1. Which of the following is not a vector ? (a) Linear momentum (b) Electric potential (c) Electric field (d) Angular momentum Answer: (d) Angular momentum 2. The efficiency of a machine should be as ______ as possible to reduce the operating cost. (a) high (b) low (c) either of the above (d) none of the above Answer:(a) high 3. The force between two charges is 120 N. If the distance between the charges is doubled, the force will be (a) 60 N (b) 40 N

Question# 1. A sensitive galvanometer produces large deflection for a (a) large value of power (b) large value of current (c) small value of current (d) large value of voitage (e) none of the above Answer: (c) small value of current Question# 2. Mass, in force-voltage analogy, is analogous to (a) charge (b) current (c) resistance (d) inductance Answer: (d) inductance Question# 3. To measure radio frequency, the suitable frequency meter is (a) hetrodyne frequency meter (b) reed vibrator frequency meter (c) Weston frequency meter (d) electrical resonance frequency meter Answer: (a) hetrodyne frequency meter Question# 4. Which of the following can be measured by the use of a tacho-generator ? (a) Acceleration (b) Speed (c) Speed and acceleration (d) Displacement Answer: (b) Speed Question# 5. The power of a n-phase circuit can be measured by using a minimum of (a) (n - 1) wattmeter elements (b) n wattmeter elements (c) (n + 1) wat...

Question # 1. In open loop system (a) the control action is independent of the output (b) the control action depends on system variables (c) the control action depends on the input signal (d) the control action depends on the size of the system Answer: (a) the control action is independent of the output Question # 2. Standard resistor is made from (a) platinum (b) maganin (c) silver (d) nichrome Answer:  (b) maganin Question # 3. Which of the following is the output of a thermocouple ? (a) Alternating current (b)  D.C. voltage (c) A.C. voltage (d) Direct current Answer:  (b)  D.C. voltage Question # 4. In a Weston frequency meter, the magnetic axes of the two fixed coils are (a) parallel (b)  inclined at 60° (c) perpendicular (d) inclined at 120° Answer: (c) perpendicular Question # 5. can be extended to systems which are time-varying ? (a) Bode-Nyquist stability methods (b) Transfer functions (c) Root l...

Question1:-The main advantage of CMOS is its  A:-Low power consumption  B:-High power rating  C:-Small signal operation  D:-Fast switching capability  Correct Answer:- Option-A Question2:-A lamp is controlled from two positions A and B (eg : staircase circuit). The boolean expression for the above circuit is  A:-  B:-  C:-  D:-  Correct Answer:- Option-B Question3:-Which one of the following is not written by Ponkunnam Varkey ?  A:-Vikarasadanam  B:-Nivedanam  C:-Aniyara  D:-Kudumbini  Correct Answer:- Option-D Question4:-The main constituents of a Portland Cement is  A:-lime  B:-Alumina  C:-Iron Oxide  D:-Alkalies  Correct Answer:- Option-A Question5:-Vagbhadanandha was the main disciple of  A:-Sree Narayanaguru  B:-Chattampi Swamikal  C:-Brahmananda Sivayogi  D:-V. T Bhattathiripad  Correct Answer:- Option-C Question6:-Monetary Mu...

PROVISIONAL ANSWER KEY Question Paper Code: 48/2017/OL Category Code: 065/2016 Exam: Draftsman (Architectural) Gr.I Medium of Question: English Date of Test 19-06-2017 Department PWD Architectural Wing Alphacode A Question1:-Which day is observed as National Voters Day ?  A:-September 14  B:-November 16  C:-January 25  D:-March 20  Correct Answer:- Option-C Question2:-Which year was the `5^(th)` and last visit of Gandhiji in Kerala ?  A:-1937  B:-1929  C:-1935  D:-1939  Correct Answer:- Option-A Question3:-Which Chinese traveller who visited Kerala in A.D. 1409 ?  A:-Xuan Zang  B:-Mahuvan  C:-Al-Masudi  D:-Fa-Hien  Correct Answer:- Option-B Question4:-Who wrote the book "Keralthinte Desa Namangal" ?  A:-S. K. Pottakkad  B:-K. Jayakumar  C:-Praveen Chandran  D:-Chattambi Swami  Correct Answer:- Option-D Question5:-Who established the Chala Bazar in Thiruvan...

Question #1. If the gain of the critical damped system is increased it will behave as (a) oscillatory (b) critically damped (c) overdamped (d) underdamped (e) none of the above Answer: (d) underdamped Question #2. technique gives quick transient and stability response (a) Root locus (b) Bode (c) Nyquist (d) Nichols Answer: (a) Root locus Question #3. On which of the following factors does the sensitivity of a closed loop system to gain changes and load disturbances depend ? (a) Frequency (b) Loop gain (c) Forward gain (d) All of the above Answer: (d) All of the above Question #4. Phase margin of a system is used to specify which of the following ? (a) Relative stability (b) Absolute stability (c) Frequency response

1. The process known as signal compression is used with a(n) ____ amplifier. A) log B ) instrumentation C)  Antilog D) isolation Answer:  B ) instrumentation 2. An automatic toaster is a ______ loop control system. A) open B) closed C) partially closed D) any of the above Answer: A) open 3. Instrumentation amplifiers are normally used to measure A) small differential signal voltages B) signals superimposed on a common-mode voltage often much larger than the signal voltage C) both of the above D) none of the above Answer:  A) small differential signal voltages 4. What is the function of a ladder network? A)Changing a digital signal to an analog B) Changing a linear signal to a digital C)   Changing an analog signal to a digital D) None of the above Answer:  A)Changing a digital signal to an analog 5. Which of the following devices are commonly used as error detectors in instruments ? A) Vernistats B) Microsyns C) Re...

Question #1:-Which among the following substance is most elastic ?  A:-Steel  B:-Rubber  C:-Brass  D:-Aluminium  Correct Answer:- Option-A Question #2. Any externally introduced signal affecting the controlled output is called a (a) feedback (b) stimulus (c) signal (d) gain control  Correct Answer:-: Option B Published @  http://engineering-questions.blogspot.com Question #3:-An increase in load at the free end of a cantilever is likely to cause failure  A:-At fixed support end  B:-Free end  C:-Mid of its length  D:-Any where  Correct Answer:-Answer:- Option-A Question #4. A.C. servomotor resembles (a) two phase induction motor (b) Three phase induction motor (c) direct current series motor (d) universal motor  Correct Answer:- Option-A Question #5:-Electronic components are usually joined by  A:-Brazing  B:-Sintering  C:-Soldering  D:-Welding  Correct Answe...

1. Strain type insulator arc used where the conductors arc (A) dead ended (B) at intermediate anchor towers (C) any of the above (D) none of the above. 2. Conductors for high voltage transmission lines are suspended from towers (A) to reduce clearance from ground (B) to increase clearance from ground (C) to reduce wind and snow loads (D) to take care of extension in length during summer.  3. Boosters are basically (A) inductors (B) capacitors (C) transformers (D) synchronous motors.  4. Which of the following is not the distribution system normally used (A) 3 phase-4 wire (B) 3 phase-3 wire (C) Single phase - 3 wire (D) Single phase -4 wire.  5. Skin effect results in (A) reduced effective resistance but increased effective internal reactance of the conductor (B) increased effective resistance but reduced effective internal reactance of. the conductor (C) reduced effective resistance as well as effective internal reactance (D) increased eff...

1. The transfer function technique is considered as inadequate under which of the following conditions ? (a) Systems having complexities and non-linearities (b) Systems having stability problems (c) Systems having multiple input dis¬turbances (d) All of the above Answer:(d) All of the above 2. In order to increase the damping of a badly underdamped system which of followincompensators may be used ? (a) Phase-lag (b) Phase-lead (c) Both (a) and (b) (d) Either (a) and (b) Answer: (b) Phase-lead 3. Which of the following is the best method for determining the stability and transient response ? (a) Nyquist plot (b) Bode plot (c) Root locus (d) None of the above Answer: (c) Root locus 4. The type 2 system has at the origin. (a) no net pole (b) net pole (c) simple pole (d) two poles Answer: (d) two poles 5. In a system low friction co-efficient facilitates (a) increased speed of response (b) increased velocity lag error (c) reduced velocit...

1. A car is running at a constant speed of 50 km/h, which of the following is the feedback element for the driver ? (a) Clutch (b) Eyes (c) Needle of the speedometer (d) Steering wheel (e) None of the above Ans: c 2. Which of the following is exhibited by Root locus diagrams ? (a) The poles of the transfer function for a set of parameter values (b) The bandwidth of the system (c) The response of a system to a step input (d) The frequency response of a system (e) None of the above Ans: a 3. With feed back _____ reduces. (a) system stability (6) system gain

1. An antilog amplifier has a ________ in series with the input. A) BJT B) diode C) diode or BJT D) resistor* Answer: D) resistor 2. A basic ________ amplifier is formed by three op-amps and seven resistors A) instrumentation B) isolation C) log * D) Antilog Answer: C) log  3.A 311 IC is an example of an eight-pin DIP that can be made to function as a ________. A) comparator B) 555 timer

1. A constant-current source delivers a load current that A) remains constant when the load resistance changes  B) varies with load resistance C) varies inversely with load resistance D) varies inversely with input voltage Answer:  D) varies inversely with input voltage 2. The voltage gain of a basic instrumentation amplifier is set by a(n) A) diode.  B) capacitor C) resistor   D) inductor Answer: C) resistor   3. What is (are) the level(s) of the input voltage to a ladder-network conversion? A) 0  B) Vref C) 0 V or Vref  D) None of the above Answer: A) 0  4. Circuits that shift the dc level of a signal are called A) limiters  B) clampers