1. If resistance of any coil is 120 OHM. Calculate the resistance when its length is increased by 20% and its dia is increased by 50 % ( fill in the blank)

2. A certain appliances uses 750w. if it is allowed to run continuously for 15 days how many kilowatt of energy does it consume? (fill in the blank)

3. What is the mageto motive force in a 75 turn coil of wire when there are 4 amp of current through it(fill in the blank)

4. If it takes 35 jule of energy to move a charge of 6C from one point to another what is the voltage betn the two points (fill in the blank)

5. Calculate the velocity of conductor if terminal voltage is 2.2 v/m & the magnetic field strength is 0.2T (fill in the blank)

6. Calculate the frequency of the motor if the speed is 4800 rpm & no of poles are 2(sometime speed is given in RPS)

7.What is the power in a resistance in mili volt having resistance of 12 ohm having a potential difference of 3v (fill in the blank)

8. What is the max allowable primary current of 2kva step down transformer with a 4-1 turns ratio if connected across a 440 v line (uscg optional)

9. A 40 cm wire current of 20 amp is placed in a uniform magnetic field of 0.6 the wire make an angle of 30 degree cal the magnitude of force on wire (fill in the blank)

10. Find the voltage of a motor of 200 rpm when the flux changes from 1wb to 4wb (fill in the blank)

11.Calculate avg value of 12 v peak sign wave for one complete cycle

12. Inductance or capacitance (dont remember but the unit is same) is 6mh current go from 0.4 to 2.5 amp in 0.6 sec calculate emf (up to 3 decimal places) (fill in the blank)

13. A sine wave with RMS value of 100 V is riding on a DC level of 50 V. calculate the maximum value of the resulting wave form.

14. A half wave rectifier having a resistive load of 600 ohmwith supply voltage of 80 v and having forrowed resistanceof 100 ohm. calculate the peak current.

15.The type of the system whose transfer function is given byG(S) =(s2+3)/(s5+s4+s3+3s2+2s) is:

16.. Alfa particles enter an electromagnetic field where the electric intensity is 300v/m and the magnetic induction is 0.200T what is the velocity of alfa particles?

17.Calculate the frequency of the motor if the speed is 400 RPS and no. of poles is 2.

18.the voltage induced across a certain coil is 150 mV. A 100 ohms resistor is connected to the coil terminal. calculate the induced current in milli amps.

19. If the resistance of the wire is 15 ohms if length is doubled and dia is one third, then resistance of the wire is???

20. what is the maximum allowable primary current of a 2kva step down transformer with 4:1 turn ratio , if connected across a 440 v line?

21. If the flux through 120 turn coil changes steadily from 2wb to 6 wb in 1 second. what is the voltage induced??

22. A 20 m wire carrying a current of 10 Amps magnetic field of 0.3 T with an angle of 40 degrees with vector B. Find the magnitude of force?

23. Three resistors 40,50,60 connected in series input 30 V . Calculate voltage drop across 60 resistor.

24. The armataure resistance of a 200 V d.c. machine has 0.5 ohm. If the full load armature current is 50 A, what will be the induced e.m.f. when, the machine acts as (i) generator (ii) motor will be(a) 230 V, 170 V (b) 210 v, 190 v, (c) 225 V, 175 C (d)202.5 V, 197.5 V

25. When 3H and 2H are in series and 2H is the mutual inductance .. what is effective inductance?FILL IN THE BLANKS1.unit of electric intensity is V/M2. PIV means Peak inverse voltage3.MCCB (protections) Thermal protective trip4.voltage and impedence of R-L-C circuit was found by Phase diagram5.A semiconductor having no impurities and having no lattice crystalline defect is known as intrinsic semiconductor , undopped semiconductor6.At zero Kelvin the semiconductor will be an insulator7.A MCB provides protection against short circuit by using an electromagnet8.Breakdown diode effect (3 blanks)zener effect,avalanche effect, _-Reverse biased----------------------9.The rate of rise of current through an inductive coil is maximumAt the start of current flow10.Diode circuit which is used to clip off signal voltage is clipper circuit11.Permanent magnets are generally made up of Alnico alloys12.The direction of induced emf can be found with the help of lenzs law13.The unit of absolute permittivity of a medium is ____FARAD/METER___________14.For a given line voltage for heating coils will produce max heat when connected in parallel15.how to check ceramic type fuse continuity test16.the direction of magnetic flux changes when direction of current changes TRUE17.the value of Vas which makes Id current approx zero is called CUT OFF voltage18.Resistance of wire is increased if the length is INCREASED and area is DECREASED19.A semiconductor is damaged by strong current because of (3 blanks)OVERHEATINGEXCESS DOPINGOVERLOAD20.Open loop transfer function of a system having one zero with positive real values is called NON MINIMUM phase21.In a control loop system having zero positive real value are called UNSTABLE22.In P-Type semiconductor the majority current carriers are HOLES23.The output frequency of a full wave rectifier is TWO TIMES the input frequency24.Breakdown diode can also be use as a VOLTAGE REGULATOR, MOTOR PROTECTION