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UPPCL RECRUITMENT 2021
Uttar Pradesh Power Corporation Limited has rolled out the official notification for the recruitment of Assistant Engineers and Junior Engineers for a total of 286 UPPCL Vacancy 2021. The Online submission of the application form for UPPCL Recruitment 2021 starts on 12th November 2021 and the last date to apply for the same is 2nd December 2021.
UPPCL-JE’21 EE: Daily Practices Quiz
UPPCL-JE’21 EE: Daily Practices Quiz 13-Dec-2021
Each question carries 1 mark.
Negative marking: 1/4 mark
Total Questions: 06
Time: 06 min.
Q1. The term artificial aging in instrument is associated with
(a) Springs
(b) Damping
(c) Permanent magnet
(d) Control torque
Q2. Relative permittivity can be measured by …… bridge.
(a) Wheatstone
(b) Hay’s
(c) De-Sauty
(d) Schering
Q3. Which of the following motors is most widely used for printers?
(a) DC series motor
(b) Stepper motor
(c) Synchronous motor
(d) Induction motor
Q4. The starting torque of a wound rotor induction motor can be increased by adding:
(a) External inductance to the rotor circuit
(b) External capacitance to the rotor circuit
(c) External resistance to the rotor circuit
(d) A combination of inductance and capacitance to the rotor circuit
Q5. For a slip ring induction motor if the rotor resistance is increased the
(a) Starting torque and efficiency increases
(b) Starting torque increases but efficiency decreases
(c) Starting torque and efficiency decreases
(d) Starting torque decreases but efficiency increases
Q6. Following is a 16-bit register for 8085 microprocessors:
(a) Accumulator
(b) Register B
(c) Register C
(d) Stack pointer
SOLUTIONS
S1. Ans.(c)
Sol. The term artificial aging in instrument is associated with permanent magnet.
Over a long period of time, permanent magnets are gradually demagnetized by the impact of heat fluctuation. The degree of deterioration depends on the type and material of magnet and the magnetic characteristics.
S2. Ans.(d)
Sol. The Schering bridge use for measuring the low permeability of the dielectric material.
NOTE:
The Schering bridge use for measuring the capacitance of the capacitor, dissipation factor, properties of an insulator, capacitor bushing, insulating oil and other insulating materials. It is one of the most commonly used AC bridge.
S3. Ans.(b)
Sol. Commercially, stepper motors are used in floppy disk drives, flatbed scanners, computer printers, plotters, slot machines, image scanners, compact disc drives, intelligent lighting, camera lenses, CNC machines, and 3D printers.
S4. Ans.(c)
Sol. Ts α R2
So, the starting torque of a wound rotor induction motor can be increased by adding external resistance to the rotor circuit.
So, the starting torque of a slip ring rotor induction motor can be increased by adding external resistance to the rotor circuit.
While high starting torques are desirable, high rotor resistance results in a relatively high slip during normal running operation. The high resistance causes increased losses and reduced efficiency during normal operation.
S6. Ans.(d)
Sol. Stack pointer: 16-bit register
