(B) For copper loss and windage-friction loss This item: Radioddity G90 -H1 Bracket Holder Quiet Cooling Fan 2-in-1 for Xiegu G90 . The ratio of the RMS value to the average value is known as the, Form factor for alternating quantity is 1.11. (A) All conductors have high ohmic values in the circuit A series field winding connected in series with the armature and a shunt field winding connected in parallel to the armature. The electric and magnetic, A wave that oscillates in many numbers of planes is called an, The photoelectric effect is the phenomenon where, Pair production explains the conversion of, Two current-carrying conductors attract each other when the current is in the same direction and repel each other when the currents are in the opposite direction. A contactor coil is designed for 220V DC. 3. Dielectric constant (r) is defined as the ratio of the electric permittivity of the material to the electric permittivity of free space. (B) Suitable to supply only mechanical load Explanation: Diversity factor refers to a ratio of the sum of individual maximum demand to the power plant maximum demand. So, the making current = 2.55 symmetrical breaking current, 34) In a three-phase induction motor, the rotor power output is 20 kW, and the value of the corresponding slip is 8 %. (A) current in one conductor 25) In an intrinsic semiconductor, the number of holes is . the number of electrons. single wavelength light source with a uniform phase, Lasers are used as a transmitter for optical fiber, i.e. (D) None of the above, 39. The total resistance of the new circuit will be theequivalent resistance of the network. (D) Any one of the above, 44. (B) 5 V (B) Pyrometer 2= Upperhalf-power frequencies ITI Electrician Questions and Answers Solved Papers are given here. (A) Resonant frequency So, we have provided below a few of the practical experiments which might come in your final practical exam. The primary reason for the less starting torque than the motor is reduced field flux. The dot product, (scalar product), of two vectors is a number (Scalar quantity). Explanation: Under no-load conditions, the transmission line carrying a current because of the capacitance effect. (D) The voltage in each phase increases by two times and the current by 1,782 times, 38. Electric field due to an infinitely long straight conductor is, \(E=\frac{\lambda }{2\pi {{\epsilon }_{o}}r}~\). In an electrostatic instrument, the voltage range is uniform. It is time-invariant because in any network analysis problem we take the circuit parameters V and I to be time-invariant. (A) All points for possible leakages (D) None of the above, 25. Solve algerba problems, learning algebra online, positive and negative integers worksheet, method to find squre root, solve fourth root problems, free online graphing calcu, nonhomogeneous wave equation 1 dimension. It is essential for CBSE 9th Class students to follow a proper timetable and ensure that you study every subject evenly throughout the week. Two bulbs of rating 230 V, 60 W and 230 V, 100 W are connected in parallel across supply mains. (D) Square law scale, 22. Class 9 sample papers for all the subjects will help students to get an idea of the marking scheme, important questions, difficulty level of the paper, time management, etc. (D) The display is damaged, 33. In contrast, the non-linear network parameter changes with respect to current and voltage. (D) Coupling angle, rotor speed and excitation, 68. The resistance of the wire will be 2 ohms at. Any two terminal bilateral linear DC circuits can be replaced by an equivalent circuit consisting of a voltage source and a series resistor. Explanation: Pentavalent impurity refers to an impurity that consists of 5 valance electrons and is shared with neighboring Si atoms, and the rest of the electrons is free to move that are responsible for conduction. An ideal voltage source and a practical voltage source can be represented as shown in the figure: Ideal and practical current sources are represented as shown in the below figure: When two identical resistors are connected in series across a battery, the power dissipated is 10 W. If these resistors are connected in parallel across the same battery, the total power dissipated will be, When two or more electrical devices of the same voltage are connected in parallel connection, their equivalent power rating can be calculated as, When n number of devices of the same voltage and same power rating (P) are connected in parallel connection, their equivalent power rating can be calculated as, When two or more electrical devices of the same voltage rating are connected in a series connection, their equivalent power rating can be calculated as, \(\frac{1}{{{P_{eq}}}} = \frac{1}{{{P_1}}} + \frac{1}{{{P_2}}} + \frac{1}{{{P_3}}} + \; \ldots \ldots .\), When n number of devices of the same voltage and same power rating (P) are connected in series connection, their equivalent power rating can be calculated as, When twoidentical bulbs are resistors are connected in series across a battery, their equivalent power (Peq) is10 W, The power rating of each bulb, P = 20 W, When these two resistors are connected in parallel, then the equivalent power dissipated is, In the series circuit, the voltage drop across each resistor = V/2. After this war, Westinghouse made the first hydro-electric generator placed on Niagara fall. (B) To reduce eddy current losses Which one of the following measurement CANNOT be done with multimeter? The strength of the magnetic field in a solenoid is given by -. Coulombs Law was derived based on certain assumptions and cant be used freely like other general formulas. The phase difference between the currents in the two pressure coils in PF meter is: Its minimum voltage rating should be: They are preferred for high frequency like a radiofrequency application over the normal p-n junction diode. (A) Will not function (C) Can also be used for PF improvement (B) The power factor increases by three times in delta connection when compared to star connection Voltage required to operate the Neon sign tubes depends upon: So, initial the force between two charges q1and q2is 200 N. \(F = k\frac{q_1 q_2}{r^2} = 200N\)-- (1), \(F' = k\frac{q_1 q_2}{r'^2} = k\frac{q_1 q_2}{(2r)^2}\), \(\implies F' = k\frac{q_1 q_2}{4r^2} = \frac{1}{4}k\frac{q_1 q_2}{(r)^2}\) ---(2), \(\implies F' = \frac{200N}{4} = 50 \ N\). Refresh the page or contact the site owner to request access. (A) The distribution transformer The best location of the power factor improving device to be installed in the transmission line is at: 32) Which of the following is a series type unbalanced fault that occurs in a power system, : In a three-phase power system, electrical faults are divided into two categories, open circuit, and short circuit faults, Open circuit faults: Open circuit faults occurs mainly due to conductor failure. Wave Particle Duality of Light (C) Load current Vs Terminal voltage (A) The induced e.m.f. The current drawn by an over excited synchronous motor will be: In the output voltage of a DC generator the ripple effects can be reduced by increasing the: Acid Test How to spot minerals separately Sanitary and Waste Mgmt. What is the magnetic flux density at distance r due to a long conductor carrying current of I? It is represented mathematically by the equation: Both paramagnetic and diamagnetic material. ITI Electrician Questions and Answers Question paper with answers pdf given below is free of cost. CBSE class 9 Science 2 Marks Important Questions, CBSE class 9 Science 3 Marks Important Questions, CBSE class 9 Science 5 Marks Important Questions, CBSE class 9Maths 2 MarksImportant Questions, CBSE class 9Maths 3 MarksImportant Questions, CBSE class 9Maths 5 MarksImportant Questions, CBSE class 9 Social Science Important Questions. Along with the theory, practicals are also important part of the syllabus. Its mandatory to do a science project as it is a part of the syllabus. \({\rm{\Phi }} = \frac{q}{{{\epsilon_o}}}\), But we know that Electrical flux through a closed surface is\(\oint \vec E \cdot \overrightarrow {ds} \), \(\therefore\oint \vec E \cdot \overrightarrow {ds} = \frac{q}{{{\epsilon_o}}}\). (A) Inductance First, we need to calculate the impedence, 11) The Primary reason for D.C. motor Preferred over A.C. motor. CBSE Sample Paper for Class 9 English (B) To give more uniform torque And the winner of the current war. In a series RLC circuit, the conditions for different nature of damping are: Over damped:\({\left( {\frac{R}{{2L}}} \right)^2} > \frac{1}{{LC}}\), Under damped:\({\left( {\frac{R}{{2L}}} \right)^2} < \frac{1}{{LC}}\), Critically damped:\({\left( {\frac{R}{{2L}}} \right)^2} = \frac{1}{{LC}}\), \({\left( {\frac{R}{{2L}}} \right)^2} = \frac{1}{{LC}}\), \(40 = \sqrt {\frac{{4 \times 4}}{{\left( {5 + {C_2}} \right) \times {{10}^{ - 3}}}}} \), \(40 = 4\sqrt {\frac{{1000}}{{\left( {5 + {C_2}} \right)}}} \), \(\therefore 100 = \frac{{1000}}{{5 + {C_2}}}\). The equivalent resistance of the network is7. (B) At lagging power factor (C) At leading power factor (C) Three voltmeter method In paramagnetic materials, the magnetic field in the material is strengthened by the induced magnetization. Explanation: Voltage can be express as work done per unit charge. Away from the poles, the magnetic field is weak. JavaTpoint offers too many high quality services. (D) Thickness of the tube, 18. And In contrast, D.C. motor refers to the motor that converts direct current into mechanical power based on the principle of Lorentz law(States that when a current-carrying conductor is placed in a magnetic field experience a force)is known as D.C. motor. Get it as soon as Thursday, Oct 27. (C) bags behind V1 by 90 The standard secondary voltage for a PT used in power system in: Since lamps connected in parallel, the voltage across theboth bulbis same. CoulombsLawtalks about the magnitude of the attraction between the two charges. It is an instrument that measures the mechanical distance between two points. (A) Capacitor start motor This current is called Norton current (or) short circuit current (isc). Resistivity is the same for given conducting materialat a given temperature and does not depend upon dimensions of wire. The Nortons equivalent of the given network is: \({I_1} = \frac{{{I_N} \;\times\; {R_N}}}{{{R_N} \;+\; {R_L}}}\), \(2{R_N} + 6 = {I_N}{R_N}\) ---(1), \({I_1} = \frac{{{I_N}{R_N}}}{{{R_N} \;+\; {R_L}}}\), The circuit shown below is critically damped. Explanation: In the synchronous machine, V curves refer to a graph depicting the relationship between Field current on the X-axis and Armature current on the Y-axis. qC = + 6C at point C, \(\frac{Kq_Aq_C}{d^2}=\frac{Kq_Bq_C}{(0.6+d)^2}\). \({P_{60}} = \frac{{{V^2}}}{{{R_{60}}}}\), \({P_{100}} = \frac{{{V^2}}}{{{R_{100}}}}\), Computer Organization and Architecture MCQ, Construction Materials and Management MCQ, Production Engineering (Manufacturing) MCQ, Cyber Security and Emerging Technologies MCQ, Soil Mechanics and Foundation Engineering MCQ, Electrical and Electronics Measurements MCQ, Sensors and Industrial Instrumentation MCQ, Business Environment and International Business MCQ, Business Statistics and Research Methods MCQ, Income-tax and Corporate Tax Planning MCQ, Educational Management and Administration MCQ, Tamil Scholars and their Contribution MCQ, Kannada Scholars and their Contribution MCQ, UKPSC Combined Upper Subordinate Services, Punjab & Haryana High Court Clerk Exam Dates, APPSC Assistant Motor Vehicle Inspector Apply Link Active, Social Media Marketing Course for Beginners, Introduction to Python Course for Beginners. The peak-to-peak value of an AC voltage is defined as the difference between its positive peak and its negative peak. The reason for using the above metal is that, it has: Xing110 How to make a Fireproof balloon If the flux is reversed in 0.01 second, then find the EMF induced in the coil. The total opposing force is known as Impedance. Magnetic Field Strength (H):the amount of magnetizing force required to create a certain field density in certain magnetic material per unit length. A capacitor is connected across a 200 V AC line. (C) Perfectly constant temperature co-efficient of resistance The force between two long parallel conductors is inversely proportional to: (D) Maintain steady speed and equal to driving torque, 21. 37) Which of the given diode is called hot-carrier dioxide? value irrespective of the waveform? As a result of the EUs General Data Protection Regulation (GDPR). And K is the susceptibility of magnetic material. (B) Danger of electric shock In order to operate a fluorescent tube set on DC supply, which of the following additional auxiliary device is to be connected? Where, E = electric field, q = charge enclosed in the surface and o= permittivity of free space. (A) Uniform scale However, when the bit is 0 i.e. The change in length is independent of the direction of the field. \(F = \frac{1}{4\pi _0}\frac{q_1 q_2}{r^2}\). (D) It works better, 15. (B) one of the wattmeters gives negative reading (D) product of current in two conductors, 9. (C) Keeping the magnetizing current to the minimum (D) To provide mechanical balance to the rotor, 47. (A) In phase with V1 Triangular Waveform This signal proportionally moves in between low and high levels. If two same charges are3X 10-7C and actedupon by a force of 0.5N. For Class 9 students, science is an important subject as it gives the basic understanding of the topics to be covered in Class 9. The dummy coils are exactly the same as other coils except that the end of the dummy coils is taped. Adjunct membership is for researchers employed by other institutions who collaborate with IDM Members to the extent that some of their own staff and/or postgraduate students may work within the IDM; for 3-year terms, which are renewable. The maximum efficiency of a transformer occurs when the copper loss becomes equal to the core loss. Some examples of dielectric materials are: It is alsoinversely proportional to the square of the distancebetween them. It must provide a repetitive and periodic signal for non-sinusoidal waveforms like triangular, square, and rectangular waves at its output. (B) Dry (C) Resistance Flight prices in external advertising: One way per person, based on 1, 2 or 4 people travelling (as indicated) on the same booking. We are providing you with the electrician interview questions, Old Question Papers. Class 9 CBSE is an important year in the life of a student. For Class 9 students science project is a part of their curriculum. (A) Rotor speed only XL= Inductive Reactance =L The Dc compound motor is a type of self-excited motor, but it is a compound of both series and shunt field coils connected to the armature winding.
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