VSSC Instrument Mechanic Paper 2016

Vikram Sarabhai Space Center Instrument Mechanic Paper 2016

Load cell uses
(a) piezoelectric crystal
(b) capacitor
(c) mutual inductance
(d) strain gauge

The two input terminals of an opamp are labelled as
(a) High and Low
(b) Input and ground
(c) Inverting and non inverting
(d) Differential and non differential

It is required to study transients during switching process. Which CRO should be preferred?
(a) Ordinary CRO
(b) Dual beam CRO
(c) Dual trace CRO
(d) Storage oscilloscope

When a capacitor is connected to the terminals of an ohmmeter, the pointer indicated a low resistance initially and finally come to infinity position. This shows that capacitor is
(a) short circuited
(b) all right
(c) faulty
(d) open circuited

Baggage scanners employed at airport uses
(a) Ultra-sound to detect prohibited products in baggage
(b) Gamma-rays to detect prohibited products in baggage
(c) X-rays to detect prohibited products in baggage
(d) Infra-red detect prohibited products in baggage

A measure of the repeatability of a measurement of some quanity is
(a) error
(b) precision
(c) accuracy
(d) significant

Which two values are plotted on a B-H curve graph?
(a) Reluctance and flux density
(b) Permeability and reluctance
(c) Magnetizing force and permeability
(d) Flux density and magnetizing force

The time base signal in a CRO is a
(a) Rectangular waveform
(b) High frequency sinusoidal wave form
(c) High frequency sawtooth wave form
(d) Square wave form

DVM is the abbreviation for
(a) Digital vacuum meter
(b) Digital volume meter
(c) Digital voltmeter
(d) Divider voltage meter

Siemens is a unit for measuring
(a) Conductance
(b) Resistance
(c) Flux density
(d) Electric field