EE COMPILATION PART 1

As a loop of wire with resistance of 10 ohm moves in a constant non-uniform magnetic field, it losses kinetic energy at a uniform rate of 4.0 mJ/s. Determine the induced current in the loop.

One primary and one secondary terminal of a two-winding transformer are connected to an ohm-meter instrument. What will be the reading on this instrument?

A car battery is rated at 80 ampere-hour. An ampere-hour is a unit of

GMC was created by the Energy Regulatory Commission to monitor the compliance of the users of the Grid to the PGC. What does GMC stands for?

Increasing the voltage of the transmission system to double its original value with the same power to be transmitted, the new power losses of the transmission system will be ____ of the original value.

The line currents in a three-phase, four-wire system are Ia = 30+j40 , Ib = 20+j20 , Ic = -40-j20 A, respectively. What is the negative sequence for phase A in Ampere?

The resistance of the primary coil of a well designed 1:10 step down transformer is 1ohm. With the secondary circuit open, the primary is connected to a 12V ac generator. What is the primary current is:

A 120V power line is protected by a 15A fuse. What is the maximum number if "120V,500W" light bulbs that can be operated at full brightness from this line?

Which of the following protective relay/s operates on the principle of the Kirchoff's Current Law?

Which of the following has the greatest effect in decreasing the oscillation frequency of an LC circuit? Using instead ____

The illumination of a surface 3.40 m directly below a light source is 25 lux. Find the intensity of the light source?

Guy wire is used in the construction of distribution lines for what purpose?

Two equal charges of opposite signs are separated by a horizontal distance of 70mm. If the resultant electric field at the midpoint of the line is 4 x 104 N/C. What is the magnitude of each charge?

A 2-T uniform magnetic field makes an angle of 30deg with the z-axis. The magnetic flux through a 3-m2 portion of the xy plane is ____ Wb.

Which of the following statement is CORRECT concerning electric field?

All grounding connections are made ___ and electrically ___.

The size of the sole connection of a grounding electrode conductor connected to a concrete-encased electrode shall not be required to be which of the following:

If a tropical storm is going to Philippine Area of Responsibility (PAR) within 24 hours, what type of alert is to be raised in accordance to the Philippine Grid Code?

Which of the following will you connect to make a galvanometer into an ammeter?

Calculate the inductance in mH required to resonate 1.0 MHz with a capacitance of 10 picofarad.

A two winding transformer has core losses and full load copper losses equal to W watts each. It is tested along with another similar transformer for back-to-back test. What is the total power input will be in W?

Four wires meet at a junction. The first carries 4A into the junction, the second carries 6A out of the junction, and the third carries 2A out of the junction. The fourth carries ____ the junction:

The customer is only charged or credited as the case may be, for the difference between the electricity supplied by the Distribution Utility and Electricity it supplies to the Distribution Utility when the times is has excess VRE generation both of which are metered using either 2 unidirectional meters, one for import and one for export, or a single bidirectional meter. What do you call this scheme?

A motor generally used in toys is

What is the instrument often used to check the degree of motor shaft misalignment?

If the potential difference across a resistor is doubled only _____

The power loss is MORE consider in the design of ____.

Nine identical wires, each of diameter d and length L, are connected in parallel. The combination has the same resistance as a single similar wire of length L but whose diameter is:

In an RLC series circuit, the source voltage is leading the current at a given frequency. If f is lowered slightly, then the circuit impedance will:

A 4-pole, 60 Hz, 200 V induction motor having a full-load current of 350 A, torque developed is 700 N-m. What is the approximate speed of the motor?

Three equal impedances Za = Zb = Zc = 4 - j7 ohms are connected in wye. Find the equivalent impedance ohms if these impedances are connected in delta.

A certain voltmeter has an internal resistance of 10 kilo ohm and a range from 0 to 12V. To extend its range to 120 V, use series resitance of _____ ohm.

The magnetic torque exerted on a flat current-carrying loop of wire by a uniform magnetic field B is:

Which of the following statement is FALSE?

The reactance in ohms of a 35microF capacitor connected to a 400 Hz generator is

The units of magnetic dipole moment are:

A 15 ohm resistor is connected in parallel with a series combination of resistors of 8 and 12 ohms. If the voltage drop across the 8-ohm resistor is 48V, what is the total voltage in V?

DMC was created by the Energy Regulatory Commission to monitor the compliance of the distribution utilities to the PDC, DMC stands for

Positive charge is distributed uniformly throughout a non-conducting sphere. The highest electric potential occurs

The rms value of an ac current is:

A 100kVA, 20/5 kV transformer has an equivalent impedance of 10%. Calculate the impedance (in ohm/s) of the transformer referred to the 5 kV side.

A 10 kVA, 200/400 V, single phase transformer is operated with open circuited secondary. Find the primary current.

A belt driven generator supplies 875kW at 90% efficiency. The loss in the drive belt is 2.5%. Calculate the horspower of the engine to drive the generator.

A golf ball is struck by a golf club and falls on a green three meters above the tee. The potential energy of the Earth-ball is greatest:

How many address lines are needed for a memory size of 32K?

What effect or current flow does reversing the direction of movement of a conductor is the magnetic field a generator have?

A coil of wire having a value of 10 + j16 ohms is connected in series with a capacitive reactance Xc, and this series combination is then connected in parallel with a resistor R. If the equivalent impedance of the circuit is 8 + j0 ohms. What is the value of Xc in ohms?

A room air conditioner is to be attached to an individual branch circuit. If the load is 12 A, what is the minimum size of branch circuit required?

Amplitude modulation generated at a very low voltage or power amplifier is ____ modulation.

A washing machine is, in effect, an R-L circuit. If the machine takes 311 W and 4.5 A from a 115-V source when operating normally. Find its power factor.