Description : What is tachometer ? Explain photo electric pick-up
Last Answer : Tachometer is an instrument which is used to measure angular speed. It is measured in revolutions per minutes (RPM). Working: Working principle:The light passes through the holes available on the rotating disc with ... is given by N=f/HS N=speed f=frequency Hs=holes on the disc
Last Answer : It is a device used to measure the speed of a rotating shaft. It usually gives speed in RPM.
Description : If the intercept on a vertical staff is observed as 0.75 m from a tachometer, the horizontal distance between tachometer and staff (A) 7.5 m (B) 25 m (C) 50 m (D) 75 m
Last Answer : (D) 75 m
Description : For a tachometer the additive and multiplying constants are respectively (A) 0 and 100 (B) 100 and 0 (C) 0 and 0 (D) 100 and 100
Last Answer : (A) 0 and 100
Description : Non-contact speed measurements can be carried out by a) Tachometer b) Stroboscope c) Oscilloscope d) Speedometer
Last Answer : Stroboscope
Description : Non contact speed measurements can be carried out bb c) Tachometer c) Stroboscope d) Stroboscope d) Speedometer
Description : Non contact speed measurements can be carried out bb a) Tachometer c) Stroboscope b) Stroboscope d) Speedometer
Description : What is an electric tachometer?*
Last Answer : A generator producing voltage proportional to speed.
Description : An a.c. tachometer is just a ________with one phase excited from the carrier frequency. (A) two-phase A.C. servomotor (B) two-phase induction motor (C) A.C. operated universal motor (D) hybrid stepper motor.
Last Answer : Ans: D This is a special purpose machine whose stator coil can be energized by electronically switched current.
Description : A tachometer is a device used to measure (1) gravitational pull (2) speed of rotation (3) surface tension (4) dispersive power
Last Answer : speed of rotation
Description : State the use of Lux Meter and Tachometer in energy audit.
Last Answer : Use of lux meter – to measure intensity of light Use of tachometer – to measure speed