ENGINEERING CAREER AND STUDY MATERIALS

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.

1. What is meant by plug and play cards? Answer: It enables the user to add devices to computer. 2. What is the function of control bus? Answer: It carries signals between the units of the computer.  3. What is the function of MAR? Answer: It specifies the address of memory location from which data or instruction is to be accessed  or to which the data is to be stored. 4.Name different I/O ports. Answer: Port is a socket on the back of computer. Different types of ports are serial ports, parallel ports and USB ports. 5. What is program counter? Answer: It keeps track of the memory address of the instruction that is to be executed next.

1. The crankcase scavenging the the crankcase or underside of the piston acts as a. A breather b. A blower c. A ventilator d. An air compressor Answer: d. An air compressor 2. For petrol engines the nominal compression ratio will vary between a. 1 to 2:123 b. 7.5 to 8.5:1 c. 1 to 5:1 d. 18 to 21:12 Answer: b. 7.5 to 8.5:1 3. . Engine torque is highest at a. Low speed b. High speed c. Intermediate speed d. Running Answer: c. Intermediate speed 4. The type of friction generally present in an automotive engine is a. Greasy friction b. Viscous friction c. Dry friction d. Heat Answer: b. Viscous friction

1. The resistance of a 2 km length of cable of cross-sectional area 2mm2 and resistivity of 2×10-8Ω m is: (a) 0.02Ω (b) 2.000Ω (c) 0.02mΩ (d) 20Ω Answer:  (d) 20Ω 2.The thrust developed by a linear induction motor depends on (a) Synchronous speed (b) Rotor input (c) Number of poles (d) Both A and B Answer:  (d) Both A and B 3. What is the “power factor”? a) Cos of the phase angle between true power and apparent power b) Peak power times 0.707 c) Sin of the phase difference between E and I d) Ratio of true power to apparent power Answer:  d) Ratio of true power to apparent power 4.  In Bipolar Junction transistors, the type of configuration which will give both voltage gain and current gain is a) CC b) CB c) CE d) None Answer: c) CE 5. A network designed to pass signals with all frequencies except those between two specified cut-off frequencies is called a (a) low-pass filter

ELECTRICAL ENGINEERING EXAM QUESTIONS FREE DOWNLOAD   The Electrical Engineering Questions repeated in many Recruitment Examinations conducted in Karnataka, Gujarath, Tamil Nadu and Delhi. Referring these questions may help you to gain more knowledge and also helps you to ease the upcoming examination conducted for recruiting Electrical Engineering in Government and Private institutions. 1. A high-pass T-connected symmetrical filter section has capacitance of 400 nF in each of its series arms and an inductance of 200mH in its shunt arm. The cut-off frequency of the filter is (a) 398 Hz (b) 1125 Hz (c) 251 Hz (d) 152 Hz Answer:  (a) 398 Hz 2. A low-pass T-connected symmetrical filter section is comprised of (a) 98.65 μH in each series arm, 121.4 pF in shunt arm (b) 49.34 μH in each series arm, 126.4 pF in shunt arm (c) 98.68 μH in each series arm, 256.7 pF in shunt arm (d) 49.34 μH in each series arm, 256.7 pF in shunt arm Answer;  (d) 49.34 μH in each series arm, 256.7